Selenium-rich material titanium acid-hydrolysate polybasic flocculating settling agent and preparation and application methods thereof

Abstract

The invention discloses a selenium-rich material titanium acid-hydrolysate polybasic flocculating settling agent and preparation and application methods thereof and belongs to the field of solid-liquid separation. In order to solve the technical problem that as existing high-concentration high-viscosity selenium-rich material titanium acid-hydrolysate has small flocculent particles, much colloid and low specific weight, difficulty in flocculation and settling and difficulty in filtering settled mud residue are caused, the selenium-rich material titanium acid-hydrolysate polybasic flocculatingsettling agent is provided. The selenium-rich material titanium acid-hydrolysate polybasic flocculating settling agent is characterized by comprising, by mass, 0.5-3.0 parts of a flocculant, 0.2-2.0 parts of a settling support, 0.2-2.0 parts of an aid, and 97.0-99.5 parts of water; the flocculant and water add up to 100 parts by mass. Titanium supernatant acquired using the selenium-rich materialtitanium acid-hydrolysate polybasic flocculating settling agent has high settling speed and good filtering performance, settled mud residue is easy to separate, and the selenium-rich material titaniumacid-hydrolysate polybasic flocculating settling agent is worthy of popularization and application.

Description

technical field [0001] The invention belongs to the field of solid-liquid separation, and in particular relates to a multi-element flocculation-settling agent for titanium-rich material acidolysis titanium liquid and its preparation and use methods. Background technique [0002] The acid-soluble titanium-rich material prepared by the hydrochloric acid method has low impurity content and good acid-soluble effect, and is a high-quality new raw material for the production of sulfuric acid titanium dioxide. The main steps of the sulfuric acid method to prepare titanium dioxide are as follows: acidolysis of titanium-rich materials, aging, dissolution, flocculation, clarification, solid-liquid separation, hydrolysis, primary washing, bleaching, rinsing, salt treatment, and calcining to make powder. [0003] The acid-soluble titanium-rich material has the material structure of rutile prototype, which can be decomposed by concentrated sulfuric acid under certain conditions to obtain...

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is that the flocculation particles of high-concentration and high-viscosity titanium-rich material acid-lysis titanium solution are small, colloid-rich, and light in specific gravity, which makes it difficult to flocculate and settle, and it is difficult to filter the settled sludge

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