Preparation technology for titania powder filtering cloth

Abstract

The invention relates to a preparation process of a filter cloth, in particular to a preparation process of a filter cloth used for filtering titanium dioxide. It has the following process flow: a. Select high-strength synthetic fiber filaments or synthetic fiber filaments; b. Splicing and twisting into threads, the splicing and twisting method is 5×7s or 5×8s; c. Weaving into cloth, the warp and weft density is (48~ 54)×(20~26) or (30 double warps)×(18~24) or (88~92)×(56~60) twill; d. After repairing and finishing, carry out shaping at a certain temperature, The setting times should be at least once, and the filter cloth should be coated again according to the production needs. The beneficial effect of the invention is that the principle is reasonable, the process is simple, and the cost is low, and the prepared titanium dioxide filter cloth has superior performance and long service life.

Description

technical field [0001] The invention relates to a preparation process of a filter cloth, in particular to a preparation process of a filter cloth used for filtering titanium dioxide. Background technique [0002] Titanium dioxide is widely used and involves many fields, such as: enamel industry, paint chemical industry and many coating industries, printing, aircraft manufacturing, vehicle industry and other exterior coatings. The types of titanium dioxide generally include enamel grade titanium dioxide, anatase titanium dioxide and rutile titanium dioxide. [0003] Filter cloth is indispensable for the production of titanium dioxide, because titanium ore becomes a dissolved liquid after acidolysis and hydrolysis, and the liquid and solid are separated through various filter machines equipped with filter cloth to produce titanium dioxide and its by-products ( Such as ferrous sulfate, etc.), so the quality of the filter cloth directly affects the quality, output, production e...

AI Technical Summary

Problems solved by technology

[0005] At present, domestic manufacturers of enamel-grade titanium dioxide and anatase titanium dioxide mostly use a single filter cloth, and there is no corresponding matching with it. The phenomenon of filter cloth penetration is serious. Some manufacturers adopt secondary Filtration wastes electricity and manpower, and the quality cannot be guaranteed. The service life of the filter cloth generally needs to be replaced within one to two months

At present, there are only a few manufacturers in China that can produce rutile titanium dioxide. They use other types of filter cloth, but the effect is not ideal. Some filter cloths have a short lifespan and need to be replaced in about half a month. It is more common, only Yutiba in Chongqing uses filter cloth imported from abroad, but its price is expensive