A method of making mineral wool fibers comprising: 30 to 55 wt%; SiO2, and 10 to 30 wt% AI2O3, and 4 to 14 wt% total iron expressed as Fe2Os, and either a) 20 to 35 wt% of the combination of CaO and MgO; and less than 8 wt% of the combination of Na2O and K2O; or b) 8 to 23 wt% of the combination of CaO and MgO; and 4 to 24 wt% of the combination of Na2O and K2O; comprises introducing mineral batch materials in to a melter, melting the mineral batch materials to provide a melt and fiberizing the melt to form the mineral wool fibers. The mineral batch materials introduced in to the melter comprise a first batch material comprising: 52 to 68 wt% SiO2, notably 52 to 62 wt% SiO2, and 12 to 30 wt% AI2O3, notably 12 to 16 wt% AI2O3, and 0 to 25 wt% CaO, notably 16 to 25 wt% CaO, and 0 to 12 wt% MgO, notably 0 to 5 wt% MgO, and 0 to 10 wt% B2O3, notably 0 to 2 wt% B2Oa, and 0 to 2 wt% of the combination of Li2O + Na2O + teO, and 0 to 1.5wt%TiO2, and 0.05 to 1 wt% total iron expressed as Fe2Os, and 0 to 1 wt% fluoride.
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机译：一种矿棉纤维的制造方法，包括：30至55重量％;和SiO2、10％至30％（重量）的AI2O3和4％至14％（重量）的总铁（以Fe2Os表示），以及a）CaO和MgO的组合的20％至35％（重量）;少于Na 2 O和K 2 O的组合的8wt％;或者b）CaO和MgO的组合的8至23重量％;或Na 2 O和K 2 O的组合的4至24重量％;包括将矿物批料引入熔化器中，将矿物批料熔融以提供熔体并且将熔体纤维化以形成矿棉纤维。引入到熔化器中的矿物批料包括第一批料，该第一批料包括：52至68重量％的SiO 2，特别是52至62重量％的SiO 2，和12至30重量％的Al 2 O 3，特别是12至16重量％的Al 2 O 3，以及0至5重量％。 25 wt％CaO，特别是16至25 wt％CaO，和0至12 wt％MgO，尤其是0至5 wt％MgO，和0至10 wt％B2O3，尤其是0至2 wt％B2Oa，和0至2 wt％ Li 2 O + Na 2 O + teO和0至1.5wt％的TiO 2的组合的％，和0.05至1wt％的总铁表示为Fe 2 O 5，和0至1wt％的氟化物。
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