Silica type cohesion liquid raw materials and its production manner and silica type cohesion liquid

摘要

PURPOSE: To prevent the generation of a malodor during or after the dissolution of a silica type flocculating soln. raw material by grinding and powdering a silica composite crystal ore.non-crystal ore and oxidizing the ground ore powder to remove non-oxidized sulfur to modify the ore powder. ;CONSTITUTION: A powdery or granular silica composite crystal ore.non-crystal ore containing 15-95wt.% of SiO₂ and 0.3-3.0wt.% of non-oxidized sulfur such as natural cristobalite or blast furnace slag is ground or powdered at first and the ground ore powder is subjected to oxidation treatment such as ageing or kiln treatment to remove 60wt.% or more of non-oxidized sulfur to obtain a modified silica type flocculating soln. raw material. The silica type flocculating soln. raw material thus obtained generates no malodor and is effective for the oil-water separation of oil-containing waste water and the adsorptive separation of surfactant-containing waste water.;COPYRIGHT: (C)1994,JPO&Japio