Method for preparing iron oxide black by using dregs of iron mud produced in chemical production with technique of reduction method of titanium powder

Abstract

A process for preparing the iron oxide black from the Fe-mud dregs generated by iron powder reducing procedure includes such steps as removing impurities, water washing while sieving washing to pH 6-7, pressure filter, drying at 100+ / -10 deg.C, and surface treating by stearic acid and carbon black. Its advantages are high content of Fe3O4 (70-95%), use of waste as raw material, and low cost.

Description

technical field [0001] The invention relates to a preparation method of a pigment. Background technique [0002] In the chemical production using the iron reduction production process, a large amount of iron sludge will be produced. At present, these iron sludge are discharged into the environment without treatment, causing serious pollution to the environment. Contents of the invention [0003] The purpose of this invention is to provide a kind of method for preparing iron oxide black pigment from iron sludge. [0004] The purpose of the present invention is achieved in the following manner: a method for producing iron oxide black from iron sludge produced by the iron powder reduction process in chemical production: the iron sludge is carefully selected to remove impurities, and passed through a 40 μm sieve in water washing , washed with water until the pH is 6-7, dried under the condition of 100°C±10°C to a moisture content of 0.5%-2% after press filtration, and pulveri...

AI Technical Summary

Problems solved by technology

[0005] The present invention has the following beneficial effects: one is waste utilization, which solves the problem of environmental pollution due to the discharge of iron slag in the production process of iron reduction method; Inexpensive and market value