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非金属矿

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本刊是1979年创刊的，国内外公开发行的全国性建材技术期刊，主要报道国内外非金属矿以及建材原材料矿产等开发利用、制品、选矿深加工、采矿以及当前行业管理、设备研制、市场等方面的有关论文、科技成果、生产经验、综合评述等。本刊主要面向非金属矿及有关的生产、设计、科研、机关、院校、基建、地质勘探及乡镇企业等单位，读者对象为科技、领导干部、院校师生和企业管理者。
  • 发文量：3384
  • 被引量：1178
  • H指数：3
  • 开始收录时间：1989(1)
  • CNKI综合因子：0.615
  • 维普期刊影响因子： 1.17
  • 万方期刊影响因子：0.71
  • 创刊时间：1978
  • 国内刊号/CN：32-1144/TD
    国际刊号/ISSN：1000-8098
  • 发行周期：双月刊
    邮发代号：28-84
  • 主管单位：苏州非金属矿工业设计研究院
    主办单位：苏州非金属矿工业设计研究院
非金属矿-联系信息
  • 主编：张明
  • 电话：0512-68701080
  • 邮箱：szfjsk@163.com
  • 地址：苏州市虎丘区安杨路169号
  • 邮编：215151
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  • 摘要：A series of MgAl-NO3- -LDHs compounds with different x values (x=nAl3+/(nAl3++nMg2+) were synthesized by the coprecipitation method. The influence of the x values on interlayer environment of LDHs was studied. XRD patterns showed that the degree of crystallization increased when the x value decreased from 0.6 to 0.29. And the change of basal spacing of LDHs with x values suggested that the arrangement of NO3- between the- layers was changing. For x=0.6, a "flat-lying" model that the anions were parallel with layer plates was proposed, to the contrast, a "tilt-lying" model was possibly existed for x=0.29~0.5. And lattice parameter c increased with the decrease of x values, however, lattice parameter a, the crystal size along the vertical direction of (003) crystal face(D003) and the size along the vertical direction of (110) crystal face(D110) were intricately influenced by x values. The FT-IR spectrum revealed that the infrared activity of NO3- was strengthened for the samples of x=0.4~0.6, but it was weakened for the samples of x=0.29~0.33.%采用共沉淀法制备了不同层板中Al3+摩尔分数x值(x=nAl3+/(nAl3++nMg2+),其中x值为0.29～0.6)的MgAl-NO3-LDHs化合物,研究了Al3+摩尔分数对MgAl-NO3--LDHs层间域环境的影响.XRD分析表明,当x从0.6降至0.29时,MgAl-NO3--LDHs的结晶度逐渐提高.LDHs的层间距随x值减小而增大,NO3-由x为0.6时的与层板平行排布,变为x为0.29～0.5时的与层板呈倾斜排布.晶胞参数c随着x值的减小而增大,晶胞参数α、沿(003)晶面垂直方向上的晶粒尺寸D003和沿(110)晶面垂直方向上的晶粒尺寸D110受x值变化的影响较为复杂.FT-IR分析表明,在高x值(x为0.4～0.6)时MgAl-NO3--LDHs中NO3-基团的红外活性增强,而在低x值(x为0.29～0.33)时其红外活性减弱.
  • 摘要：Three types of palygorskites and three types of NBR-modified phenolic resin are compressed respectively into new dual friction materials by material testing machine. Their friction, wear and impact resistance performances are studied experimentally. The results show that modified friction materials made of palygorskites raw ore and nano-particle modified NBR phenolic resin have better performance than unmodified phenolic resin mixed materials in high temperature stage. But compared with NBR-modified phenolic resin, the friction and wearing performances of dual friction material compressed by palygorskites by Al-Zr coupling agent and modified phenolic resin by A12O3 nanoparticles decrease a little bit and the mixed modified material by XD-172 has better effect only at the low temperature stage.%通过试验机将3种不同的坡缕石和3种不同的丁腈改性酚醛树脂分别热压制成不同的二元摩擦材料,研究了其摩擦磨损和耐冲击性能,结果表明,在高温阶段,坡缕石原矿与纳米改性树脂形成的摩擦材料性能比未改性丁腈酚醛树脂更好,铝锆偶联剂改性坡缕石与Al2O3纳米粒子改性树脂组成材料的摩擦磨损性能较未改性丁腈酚醛树脂有所下降,XD-172改性坡缕石与纳米Al2O3改性丁腈酚醛树脂组成材料的摩擦磨损性能在低温阶段有所提高.
  • 摘要：According to the difficulty in removing silicic impurity for Cryptocrystalline, research of purification through alkali roasting binding with flotation was carried out. The amount of alkali and flotation contribute to the effect of purification remarkably. In this experiment, a effective way to get rid of the silicic impurity in graphite was found, which help us to get a graphite product with a high microcrystal carbon. The sample had been cleaned from washing process is the efficient fact, by which super pure graphite can be got. In this paper, conclusion was drew that the rudimental natrium ion from alkali leaching process can be deposited with the silicic and aluminous ion during the acid washing process to transform into cryolite substance.%针对微晶石墨中硅杂质难脱除的特点,进行了高温碱法结合浮选法除硅的研究.研究表明,浮选法和氢氧化钠的加入量对提纯效果影响显著.在合适工艺条件下,可得到固定碳含量较高的微晶石墨产品,焙烧后样品水洗干净与否直接影响样品的最终固定碳含量.高温碱处理后残留的钠离子与待处理的铝、硅杂质离子反应,生成不溶性物质,是导致硅杂质脱除效果不佳的主要原因.
  • 摘要：In this paper, an ion exchange method was conducted to modify nature heulandite using classic acid, alkali and salt. The effects of activation modification conditions on the results of zeolite modification were studied, and the mechanism of nature zeolite modification was also discussed. The results showed that the adsorption performance and ion exchange performance of modified natural zeolite were furtherly improved and the adsorption ability of modified natural zeolite on heavy metal ions was greatly increased.%采用典型的酸、碱、盐,利用离子交换的方法对天然片沸石进行了改性,研究了活化改性条件对沸石改性效果的影响,探讨了NaOH改性天然沸石的机理.结果表明,天然片沸石改性后,吸附性能和离子交换性能得到进一步改善,对重金属离子的吸附能力显著提高.
  • 摘要：针对宜昌细粒易泥化、低品位难选胶磷矿,采用稀浆浮选的单一反浮选工艺,以硫磷混酸调整pH值、抑制胶磷矿,采用改性脂肪酸类捕收剂HS捕收碳酸盐,获得了最终磷精矿P2O5品位为29.45％、MgO含量为1.28％、回收率为75.38％的优良指标,实现了白云石、方解石与胶磷矿的常温浮选分离.%According to Yichang collophane's character of low-grade and fineness, we determined the single reverse-flotation flowsheet and obtained a nice dressing indexes by using sulphur-phosphorous mixed acid as depressor and HS as collector. The final phosphorus concentrate contained P2O5 29.45%, MgO 1.28%, with a recovery of 75.38%, successfully separating dolomite and calcite from cellophane by flotation.
  • 摘要：A roughing concentrate with grade of 30.91% and recovery of 80.32% was obtained by flotation. The chemical mineral processing of "alkalify roasting and hydrochloric acid neutralization" was carried for the roughing concentrate. It was shown that the consumption of sodium hydroxide was 300kg/t, the roasting temperature was 500℃, the roasting time was 40min, the consumption of hydrochloric acid was 15 kg/t, the neutralization time was 10min. The roughing concentrate with grade of 30.91% increased to 67.63% and the recovery was 87.03%. It provided a way for the processing of the fine particle and refractory anatase ores.%TiO2品位为10.97％的某锐钛矿,经浮选获得品位为30.91％的粗精矿,对该浮选粗精矿进行“加碱焙烧-盐酸中和”的化学选矿试验研究.研究表明,氢氧化钠用量300 kg/t,焙烧温度500℃,焙烧时间40 min,盐酸用量l5 kg/t,中和时间10 min,对TiO2品位为30.91％的粗精矿,化学选矿可以将TiO2品位提高到67.63％,回收率为87.03％.采用浮选-化学选矿工艺能有效实现细粒难选锐钛矿的选矿,为该类矿物的开发应用提供了一种新途径.
  • 摘要：Jincheng coal gangue is used as raw material for the preparation of excellent property of polyaluminium chloride (PAC) by the process of crushing, calcining, acid-dissolution, filtering, enrichment evaporation and so on. The optimum technological parameters for the preparation of polyaluminum chloride are as follows: the roasted temperature is 750℃, the time is (1+2) h (that is 600℃ for 1h, 750 ℃ for 2h), the temperature for soaked in HC1 is 109 ℃ for 3h, the proportion of acid to coal gangue is 3.0 mL/g. The properties of the obtained product are as follows: the alumina content of solid PAC is 29%, alumina content of liquid PAC is 10%, and the basicity of PAC is 84%, which meet the national standard GB15892-2009.%以晋城煤矸石为原料,经过粉碎、煅烧、酸溶、过滤、浓缩蒸发等工艺制备了性能优良的聚合氯化铝.实验确定最佳工艺参数为:焙烧温度750℃,焙烧时间(1+2)h,即600℃下1h,750℃下2h,酸浸温度109℃,酸浸时间3h,液固比3.0 mL/g.所得聚合氯化铝固体产品Al2O3含量为29％,液体产品Al2O3含量为10％,盐基度为84％,符合GB15892-2009要求.
  • 摘要：Phosphate of chrome-alumina (PCA) matrix composites were successfully prepared via thermoforming by using chrome-aluminum phosphate as adhesive, zinc oxide as curing agent, Al2O3, Cr2O3, SiO2 and SiC as matrix material's fillers. We have studied the effect of fillers' amount on the mechanical properties, dielectric properties and moisture absorption rate of composite materials, the effect of the amount of Al2O3 on the mechanical properties of composite materials was investigated, and the effect of particle size of Al2O3 on the mechanical properties of composite materials was investigated as well. The results show that, with Al2O3 as the filler, the composite's mechanical properties and dielectric properties are the best and moisture absorption rate is the minimum. When the amount of Al2O3 filler is 35%, the mechanical properties of the obtained composite are the best, of which the tensile strength is 89.1 Mpa and the flexural strength is 125.1 Mpa. Further more, with the smaller Al2O3 filler's particle size, the better mechanical properties of composite materials can be obtained.%以磷酸铬铝( PCA)为胶粘剂,氧化锌为固化剂,Al2O3、Cr2O3、SiO2、SiC为填料制备基体材料,以高硅氧纤维布为增强材料,通过热压成型制备磷酸铬铝复合材料.考察了不同填料的加入对复合材料力学性能、介电性能和吸潮率的影响,A12O3填料的加入量及Al2O3填料粒径对复合材料力学性能的影响.结果表明:以Al2O3为填料时,复合材料的力学性能和介电性能最佳,吸潮率最小；当Al2O3填料的加入量为35％时,复合材料的力学性能最好,其拉伸强度为89.1 MPa,弯曲强度为125.1MPa;加入填料的粒度越小,复合材料的力学性能相对越好.
  • 摘要：The mesoporous molecular sieve Ti-MCM-41 was synthesized by using silica from water glass of industry, titanium respectively from TiCl, and TiCl4, H2SO4 for adjusting the pH value of the slurry and CTAB as template in an open-vessel. The characterization of its crystal order and framework titanium was carried out by means of X ray diffraction (XRD), fourier transform infrared spectrometer(FT-IR), visiblespectroscopy (UV-Vis) and mensuration of pore structure. The influence of different titanium source and titanium content on the structure and catalytic oxidation performance of Ti-MCM-41 was investigated. The results showed that under the synthetic conditions of this experiment, Ti-MCM-41 with hexagonal mesoporous structure, good long-range order and crystallinity can be synthesized both by TiCl3 and TiCl4. But it is not suitable for obtaining Ti-MCM-41 with high titanium content, highly ordered, high hydrothermal stability and high catalytic oxidative activity using titanium from TiCl4.%在敞开体系中,分别以TiCl3和TiCl4为钛源,工业用水玻璃为硅源,三甲基十六烷基溴化铵(CTAB)为模板剂、H2SO4为pH值调节剂,合成出了不同钛源不同硅钛摩尔比的中孔分子筛Ti-MCM-41；并利用X射线衍射(XRD)、红外光谱(FT-IR)、紫外-可见光谱(UV-Vis)和孔结构测定对所合成的样品进行了表征；考察了不同钛源不同钛含量对Ti-MCM-41结构和催化氧化性能的影响.结果表明:在本实验的合成条件下,用TiCl3和TiCl4为钛源都能合成出具有六方介孔结构、良好长程有序性和结晶度的中孔分子筛Ti-MCM-41,但要合成高钛含量、高度有序、高水热稳定性和高催化氧化活性的Ti-MCM-41中孔分子筛,不宜以TiCl4为钛源.
  • 摘要：利用壳聚糖负载膨润土吸附处理含磷废水,考察了吸附剂投加量、吸附时间、振荡强度、pH值等对磷去除率的影响.结果表明:投加量为0.5 g、吸附90 min、振荡强度为100 r/min、pH值为7,25℃下对25 mL质量浓度为2mg/L的磷溶液去除率为78.25％.壳聚糖负载膨润土对磷的吸附符合Langmuir等温吸附模式.%The effects of adsorbent dosage, adsorption time, oscillation intensity, pH value on phosphorus removal by chitosan loading bentonite were studied. The results showed that: for initial phosphorus of 2 mg/L in 25mL, at the temperature of 25 °C, the removal rate of phosphorus was 78.25%, when the adsorbent dosage was 0.5 g, adsorption time was 90 min, oscillation intensity was 100 r/min and pH value was 7. The phosphorus adsorption on chitosan loading bentonite conformed to Langmuir equation.
  • 摘要：以湿态水处理污泥作为主要原料,混合粉煤灰和集料尾泥制备了陶粒,陶粒烧成过程模拟了回转窑工况条件.结果表明:当污泥掺入量较高时,污泥中有机成分的高温分解使陶粒坯体有较强的烧胀作用.当陶粒坯体中污泥质量含量为50％、粉煤灰和集料尾泥分别为25％时,1040℃短时烧结后的陶粒样品具有较为理想的轻集料性能,其堆积密度为760 kg/m3,筒压强度为5.2 MPa.浸出实验表明:随着污泥掺量的增加,从陶粒中浸出重金属离子量的增加幅度较小.这说明陶粒结构对污泥中的重金属有较强的稳定和固定作用,污泥陶粒的使用不会对环境造成二次污染.%The lightweight keramzite spheres were prepared using wet sewage sludge from municipal sewage treatment plant with the gangue sludge and fly ash as aids. The fabrication process simulated the conditions of practical kiln firing. The results indicated that apparent bloating took place when the sewage sludge was the main component in green keramzite spheres due to its organic mass decomposition at high temperature. The desirable light weight keramzite spheres could be prepared at 1040 ℃ with short stay time as the sewage sludge was 50%, fly ash and gangue sludge were 25%, respectively. The as-prepared keramzite spheres had a bulk density of 760 kg/m3 combined with cylindrical compress strength of 5.2 Mpa. With increasing amount of sewage sludge in the green samples, the leaching concentration of heavy metal increased slowly, suggesting that the keramzite structure had a strong stabilization and fixing ability of heavy metal and the as-prepared keramzite spheres were environmental friendly.
  • 摘要：Using coal gangue as raw materials, the product of alumina hydroxide was obtained after iron and aluminum were separated from the leaching solution in the utilization of the differences of hydrolyzing pH value between Fe3+ and Al3+ through mechanical grinding, thermal activation and acid extraction. The mechanism influencing the leaching rate of alumina such as gangue pretreatment, acid concentration, reacting temperature and time were investigated. And the optimum conditions were determined. The results show that the leaching rate of alumina reaches 81.8% under the conditions as follows: particle size of 80 mesh, roasting at 750℃ for 120 min, acid leaching at 95 ℃ for 4 h, L/S mass ratio of 3(liquid/solid), sulfuric acid concentration of 40%.%以煤矸石为原料,经机械活化、热活化、酸浸提铝,酸浸液利用Fe3+、Al3+水解pH值的差异分离铝铁,制备氢氧化铝.研究了煤矸石预处理条件、酸浓度、反应温度、时间和液固质量比等因素对煤矸石中铝溶出率的影响机理,确定了最佳工艺条件为:粒度80目,焙烧温度750℃,焙烧时间120 min,浸取温度95℃,浸取时间4h,液固质量比3,硫酸质量分数40％.此条件下煤矸石中Al2O3的溶出率达到81.8％.
  • 摘要：Using low-grade bentonite as the main material and based on the theory analysis of static electricity effect, stereo-hindrance effect and complex effects, a new advanced organic compound deflocculant was prepared. The influence of deflocculant, solid content and milling time on slurry properties were analyzed by XRD, Zeta potential analysis methods and so on. The results show that the main components of the new advanced deflocculant are sodium tripolyphosphate, sodium pyrophosphate, and sodium oxalate. When the mass ratio is 1 : 2 : 2, the dosage is 0.50%, and the water content achieves 60%, the deflocculant having the best properties can be obtained, the fluidity of ceramic slurry is less than 28 s and the slurry has good stablitity.%以低品位膨润土为主要原料,研制出一种新型高效复合解凝剂.通过X射线衍射分析(XRD)、Zeta电位、流动度、触变性分析等检测手段,探讨了解凝剂种类、用量、泥浆含水率等因素对低品位膨润土陶瓷泥浆性能的影响.结果表明复合解凝剂的组成为三聚磷酸钠、焦磷酸钠、草酸钠,其质量比为1∶2∶2,最佳剂量为0.50％,在含水率为60％的条件下,采用复合解凝剂,泥浆流动度可控制在28s以内,且泥浆具有良好的稳定性.
  • 摘要：研究了萤石和金云母纯矿物、混合矿和实际矿石的浮选行为.纯矿物浮选试验结果表明:在中性至弱碱生条件下,油酸钠能很好地浮选萤石,而对金云母几乎不浮；混入难免金属离子Fe3+和Al3+后,萤石被抑制而金云母被活化,采用碳酸钠和硫化钠作为调整剂,可以改善萤石与金云母的浮选分离.当pH值为10.0、硫化钠和油酸钠的浓度分别为2.0× 10-3 mol/L和3.0×10-5 mol/L时,能较好地分离萤石和金云母的人工混矿；对含萤石22.27％、金云母75％的实际矿石,采用药剂制度为Na2CO3 10.00 kg/t、Na2S 20.00kg/t、油酸钠0.13 kg/t,进行1段粗选得到萤石粗精矿含CaF2 55.40％、回收率为88.01％.%The flotation behaviors of pure, articficial mixed minerals and real ores of fluorile and phlogopite were studied. Pure minerals tests showed that fluorite was collected well by sodium oleate while phlogopite was hardly floated in the neutral and weak alkaline pulps; that fluorite was depressed while phlogopite was activated due to the presence of Fe3+ and Al3+ in the pulp; and that the detrimental effect of the metallic ions on separation between fluorite and phlogopite was eliminated using sodium carbonate and sodium sulfide as regulators. When the dosages of Na,S and sodium oleate were 2.0×10-3mol/L and 3.0×10-5mol/L respectively, the artificially mixed minerals of fluorite and phlogopite were separated well at the pH value of 10.0. The real ore contained 22.27% fluorite and 75.00% phlogopite when treated by reagents of Na2CO3 10.00 kg/t, Na,S 20.00 kg/t and sodium oleate 0.13 kg/t in one step flotation, and the fluorite concentrate with the content of CaF, 55.40% and CaF, recovery of 88.01% was obtained.
  • 摘要：以高岭土、丙烯酸及其衍生物、淀粉等为原料,用水溶液交联共聚法制备多元复合高吸水树脂.考察了高岭土、引发剂、交联剂用量等因素对材料吸水性能的影响,制备的样品吸去离子水、0.9％ NaCl水、自来水分别为1480g/g、55 g/g、160g/g.%Multiple super-absorbent composite were synthesized using water solution cross-linked polymerization by kaolin, acrylic acid derivatives, starch and so on. Some factors affecting the absorbcncy of super-absorbent composite resin such as the amount of kaolin, initiator and cross-linking agent have been discussed. The sample absorbing no-ion water, 0.9% NaCl solution, tap water are 1480 g/g, 55 g/g and 160 g/g respectively.
  • 摘要：The KH-570 silane coupling agent was employed to surface modification for fly ash. The modification results were analyzed by FT-IR.The modified fly ash was added to the friction material, in the view of investigating the effect of silane coupling agent on the performance of friction material. The result indicated that KH-570 modified the fly ash significantly, with the mixing of modified fly ash, the mechanical properties of friction material enhanced and wear rate dropped dramatically.%选用KH-570硅烷偶联剂对摩擦材料填料粉煤灰进行湿法表面化学改性,采用傅里叶变换红外光谱(FT-IR)对改性效果进行分析,并将改性填料加入摩擦材料中研究其对材料性能的影响.结果表明:KH-570对粉煤灰表面改性效果显著,将改性粉煤灰加入摩擦材料中,其机械性能提高,磨损率明显下降.
  • 摘要：A beneficiation test of aphanitic graphite ore from Panshi area was studied. On the basis of the best roughing conditions, an open trial was conducted by three-time-regrinding and four-time-cleaning, and finally the grade of graphite increased from 62.33% to 81.70%, and the recovery of graphite was 42.63%.%对磐石地区隐晶质石墨进行选矿试验研究,在确定最佳粗选条件基础上,采用3次再磨4次精选开路试验,最终使石墨品位由62.33％提高到81.70％,回收率为42.63％.
  • 摘要：以硬脂酸丁酯和硬脂酸甲酯为相变体,制备了硅藻土负载复合相变储能材料.其优化制备工艺条件为:硅藻土煅烧温度350℃,煅烧时间3h,相变处理负载量50％,负载温度90℃,负载时间20 min.%Diatomite composite phase change materials is prepared with butyl stcarate and methyl stearate as the phase variation. The condition of diatomite composite phase change material preparation is as follows: the calcination temperature of diatomite 350 ℃, the calcination time 3 h, the load cintent 50%, the load temperature 90 ℃, the load time 20 min.
  • 摘要：采用静态吸附法研究了新型分子筛对海水中钙离子的吸附性能,结果表明,新型分子筛对钙离子有较好的吸附效果,其全交换容量可达254.85 mmol/100g.考察了分子筛用量,吸附时间,溶液pH值和温度等因素对除钙效果的影响,确定了最佳操作条件为:分子筛用量2g/100mL海水、吸附时间60 min、溶液pH值8.1、温度60℃.钙离子在分子筛上的吸附平衡符合Langmuir吸附等温方程,其吸附过程符合准一级吸附动力学方程.%The adsorption properties and primary influential factors of new type molecular sieve on Ca2+ removal in seawater have been experimentally studied at static state. The results show that new type molecular sieve is quite feasible in the adsorption of Ca1* from seawater and the saturation adsorbing capacities of Ca2+ is 254.85 mmol/IOOg. The optimum conditions for the removal of Ca2+ are: 2 g of molecular sieve in 100 tnL seawater, the adsorption time of 60 min. the pH value of 8.1 and the adsorption temperature of 60 ℃. Thermodynamics and kinetics for the adsorption of Ca2+ were studied through static experiments. The adsorption of Ca2+ on new type molecular sieve accords with Langmuir isotherm and is in agreement with pseudo-first-order kinetics model.
  • 摘要：This article has carried the theoretical analysis on the connection between composite friction coefficient and that of each composition. The experimental results show that under certain conditions, there is a linear relationship between composite friction coefficient and that of each component.%对复合材料整体摩擦因数与其各组分摩擦因数之间关系进行了理论分析,并通过实验进行了验证,结果表明,在一定条件下,复合材料整体摩擦因数与其各组分摩擦因数之间存在线性关系.
  • 摘要：This paper has made a research about liberation degree of metakaolin and magnetite and the effect of magnetic separation under the different particle size of kaolinite-pyrite cinder to make effective use of metakaolin and iron mineral in kaolinite-type pyrite cinder. The results show that the liberation degree of magnetite and metakaolin is up to 99% when the kaolinite-type pyrite cinder was crushed to 140~160 mesh. Yields of magnetite concentrate reach to 36.00%, the iron grade of which is 59.32% and the iron recovery of which is 89.00% after the magnetic separation, yields and iron content of metakaolin decreased gradually by the decrease of broken particle size. It have extremely high comprehensive utilization value to separate kaolinite-pyrite cinder that magnetite can be used as good ironmaking raw materials and metakaolin also is excellent cement mixed material and concrete admixture.%为了使高岭石型硫铁矿烧渣中的偏高岭石和铁矿物得到高效利用,本实验就高岭石型硫铁矿烧渣在不同破碎粒级下偏高岭石与磁铁矿的解离程度及试样的破碎粒级对磁选分离效果的影响进行了研究.结果表明:高岭石型硫铁矿烧渣破碎到140～160目,磁铁矿和偏高岭石解离度达99％.通过磁选后所得铁精矿产率为36.00％,品位59.32％,铁回收率89.00％;尾矿中偏高岭石产率及其铁含量均随破碎粒度减小而逐渐降低.铁精矿是很好的炼铁原料,而偏高岭石又是很好的水泥混合材和混凝土活性掺合料,具有极高的综合利用价值.
  • 摘要：To study the influence of FeS, as reducing agent, on thermal decomposition characteristics of gypsum and to calculate the active energy required for gypsum decomposition with different proportion of reducing agent, the method of TG-DSC and the model of Coats-Redfem were adopted respectively. The study used Nitrogen as carrier gas to prevent reducing agent from oxidation. Results showed that when the ration of molar mass between FeS and gypsum was increased from 1 : 22 to 3 : 22, the activation energy value decreased from 327 kJ/mol to 214 kJ/ mol; accordingly, the initial decomposition temperature fell from 1350 ℃ to 998 ℃. The decomposition characteristics of gypsum represented similar tendency when the molar mass ratio of coke and gypsum increased from 1 : 2 to 2 : 1 apart from a slump in the initial decomposition temperature from 1350 ℃ to 956 ℃. Besides, the product Fe2O3 has positive effects on the sequential decomposition,of gypsum.%采用TG-DSC方法分析FeS做还原剂时化学纯石膏的热分解特性,并利用Coats-Redfem模型计算还原剂掺量不同时石膏分解的活化能值.为防止还原剂被氧化选择氮气作为载气流.结果表明,焦炭与石膏摩尔比从1∶2增加到2∶1时,石膏分解所需的活化能从327 kJ/mol降低到210 kJ/mol,起始温度从1350℃降到956℃；FeS与石膏的摩尔比从1∶22增加到3∶22时,石膏分解所需的活化能值从327 kJ/mol降低到214 kJ/mol,起始分解温度从1350℃降低到998℃,同时生成的产物Fe2O3对石膏的分解有促进作用.
  • 摘要：The effects of some factors, such as the types and dosage of collector, mixed collector ratio and concentration, were investigated on the effect of the quartz impurity purification. The results showed that the reverse flotation method used in collector could achieve a significant effect on the iron purification. The optimizing process parameters are: the pH value 5, 20% of flotaton pulp density, 80 g/t collector(diamine) and 75 g/t foaming agent 2μ oil as roughing, the pulp pH value 9,20% of flotation pulp density, 150 g/t collector (m( petroleum sulfonate) : m(octyl hydroxamic acid) = 4 : 1) and 75 g/t foaming agent 2# oil as cleaning. 99.01 μg/g of total amount of impurities were obtained, compared with the raw materials, 53.96% removal of the total impurities elements were achieved and the removal of elements Fe and Al are 84.15% and 37.50% respectively.%考察了捕收剂种类、用量、混合捕收剂配比及浓度等因素对某脉石英砂除杂提纯效果的影响.结果表明,采用混合捕收剂反浮选,除铁提纯效果较理想,优化的工艺参数如下:粗选时矿浆pH值为5,矿浆质量分数为20％,捕收剂丙撑二胺用量为80g/t,起泡剂2#油用量为75 g/t;精选时矿浆pH值为9,矿浆质量分数为20％,石油磺酸钠和辛基羟肟酸按4∶1质量配比,用量为150 g/t,起泡剂2#油用量为75g/t.最终石英砂精矿杂质元素总量为99.01 μg/g,其去除率为53.96％,元素Fe和Al除去率分别为84.15％和37.50％.
  • 摘要：Polyhydroxyl iron-chitosan modified bentonite was prepared using a bentonite from Ningmin of Guangxi as raw material, polyhydroxyl iron and chitosan as modifier, which was used for treating filature wastewater. The effect on removal ratio of CODCr was studied. The results show that the removal ratio of CODCr could achieve 90.56% under the following conditions: the temperature is 25 ℃, the pH value of the wastewater is 6.3, the dosage of modified bentonite is 0.85 g/L, fast stirring at the speed of 300 r/min for 1min and slow stirring at the speed of 80 r/min for 10 min, and sedimentation time is 15 min. Compared with Na-bentonite, the processing capacity of modified bentonite greatly enhanced in filature wastewater.%以广西宁明膨润土为原料,壳聚糖和聚羟基铁离子为改性剂,制备了聚羟基铁-壳聚糖改性膨润土并应用于缫丝废水的处理,考察了缫丝废水CODCr去除率的影响因素.结果表明:在温度为25℃,废水pH值为6.3,改性膨润土投加量为0.85 g/L,快速搅拌速度为300 r/min、搅拌时间为1 min;慢速搅拌速度为80 r/min,搅拌时间为10min,沉降时间为15min的条件下,聚羟基铁-壳聚糖改性膨润土对缫丝废水CODCr的去除率可达90.56％.与钠化膨润土相比,聚羟基铁-壳聚糖改性膨润土对缫丝废水的处理能力显著提高.
  • 摘要：Jiangxi Jinxi graphite deposit was characterized by large scale, simple form, steady quality, high fixed carbon content, medium graphite crystal flake and associated industrialized V2O5. This paper related the geological characteristics of the graphite deposit and analyzed its genesis, then conducted experiment and finded out the prospecting direction.%江西金溪地区石墨矿床,以规模大、形态简单、质量稳定、固定碳含量较高、石墨晶体鳞片中等、伴生V2O5达到工业规模为特征.叙述了该矿床地质特征,分析了矿床成因,介绍了试验情况,指出了找矿方向.
  • 摘要：Aiming at low-quality fly ash and limestone powder of Fuxin, comprehensive research to influence of low-quality fly ash and limestone powder on mixed concrete performance was done by method of experimental analysis. Result shows that super-fine limestone powder can enhance early strength of concrete and improve its workability remarkably, fly ash can enhance long-term strength of concrete and improve its durability, low-quality fly ash can also produce high-performance concrete by physical activation, low water to binder ratio and mixing super-fine limestone powder. The research inaugurate an effective approach to utilize substantial low-quality fly ash for sustainable development of construction industry.%针对阜新地产低品质粉煤灰和石灰石粉,采用试验分析的方法全面系统地研究了低品质粉煤灰和石灰石粉复掺混凝土的性能.结果表明,超细石灰石粉能提高混凝土早期强度并显著改善其工作性能,粉煤灰则能有效提高混凝土后期强度并改善其耐久性能,通过物理活化、采用低水胶比和外掺超细石灰石粉,低品质粉煤灰同样可以制备出高性能混凝土,为建筑业的可持续发展开辟了一个大宗利用低品质粉煤灰的有效途径.
  • 摘要：Low-temperature expandable graphite with high initial expansion temperature was prepared using the potassium chlorate as the solid oxidant. Reaction conditions was researched on the low-temperature expandable graphite swelling volume, the results showed that the initial expansion temperature was 260℃, and the expansion was up to 300 mL/g at 400℃ while taking 5 g of graphite, 0.6 g of potassium chlorate, 13.5 ml of concentrated sulfuric and 4.5 mL of concentrated nitricacid reacting 60 min at 20 ℃. The X-ray diffraction confirmed the formation of graphite intercalation compounds, and the SEM showed the microstructure of expanded graphite.%以氯酸钾为固体氧化剂,制备了高起始膨胀温度的低温可膨胀石墨.考察了反应条件对可膨胀石墨低温膨胀体积的影响,确定了最佳工艺条件:5g石墨配以0.6g氯酸钾、13.5 mL浓硫酸、4.5 mL浓硝酸、在20℃时反应60min.此条件下得到的可膨胀石墨起始膨张温度为260℃,在400℃时膨胀体积为300 mL/g.X射线衍射证实了石墨层间化合物的生成,并利用SEM扫描电镜分析了膨胀石墨的微观结构.
  • 摘要：研究了药用膨润土、膨润土凝胶和钠化膨润土的渗透性,为膨润土作为医药辅料提供依据.采用分光光度法通过分别测定不同质量、不同温度下渗透进入膨润土内的维生素B12的浓度变化来确定膨润土载体的渗透性,结果表明在37℃下2.0000g药用膨润土的渗透性最好.%The permeability of modified medicinal bentonite, bentonite gel and the sodium bentonite was studied, which provided the basis for bentonite as pharmaceutical adjuvant. The spectrophotometer method were used to determine vitamin B12 concentration changes penetrated into bentonite with different mass to determine the permeability of bentonite carrier at different temperature, and the results showed that the permeability of medicinal bentonite at 37℃ with 2.0000 g was the best.
  • 摘要：采用化学液相沉积法制备金云母-氧化铁珠光颜料,考察了反应过程中体系pH值、氯化铁浓度以及焙烧温度对产品性能的影响,确定了金云母基珠光颜料的优化制备工艺为:FeCl3溶液质量分数6％,pH值2～2.5,焙烧温度700℃.此时金云母珠光颜料成品具有良好的性能,珠光颜料包覆粒径均匀,包覆效果较好,珠光效应优.%The pealy pigment was prepared using the liquid deposition method and the effects of the pH value, the concentration of ferric chloride solution and the calcination temperature were systemically studied. The results showed that phlogopite pearly pigments would represent high quality with the most uniform particle size and the best coating under the process parameters as follows: concentration of ferric chloride solution 6%, pH value 2~2.5, and the calcination temperature 700 ℃.
  • 摘要：In order to improve activated alumina's performance of phosphorus removal in waste water, the activated alumina as a carrier was modified with ferric chloride solution by the alkaline deposition method. Pore volume and BET surface area were determined. The effects of adsorption time, pH value, initial concentration of wastewater, modified dosage and other factors on the impact of phosphorus removal from wastewater were studied. Modified activated alumina's adsorption mechanism of phosphorus was discussed. The results showed that the specific surface area of modified activated alumina was 430.582 m'/g and improved by 23.5% than the unmodified activated alumina's. It came to the adsorption equilibrium after four hours and the adsorption capacity of phosphorus improved by 10.2%. The best adsorption pH value was 5~7. It was also found that with the increase of initial concentration of wastewater, the removal rate of phosphorus decreased instead, while the removal rate of phosphorus increased with the increasing modified dosage, the optimal dosage of modified activated alumina was 5.0 g/L. Both Freundlich and Langmuir model of adsorption isotherms could reflect the adsorption behavior of modified activated alumina for phosphorus, while the Langmuir model was more proper.%为提高活性氧化铝对废水中磷的去除效果,以氯化铁为改性剂,采用碱性沉积法对其进行改性,测定了改性前后活性氧化铝的比表面积及孔容,考察了吸附时间、pH值、废水初始浓度、改性剂投加量等因素对去除废水中磷的影响,探讨了改性活性氧化铝对磷的吸附机理.结果表明,改性后活性氧化铝的比表面积为430.582 m2/g.提高了23.5％；吸附时间为4h时,吸附达到平衡,磷吸附量比改性前提高了102％；当pH值在5～7时,磷去除效果最好；随着废水中磷初始浓度的提高,磷去除率降低；随着改性活性氧化铝投加量的增加,磷去除率升高,当投加量为5.0g/L时,吸附效果最好；Freundlich和Langmuir2种等温线模型均能较好反映改性活性氧化铝对磷的吸附行为,其中Langmuir模型更为理想.

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