HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

A brief analysis of diatomite as a filter aid for preventing clogging in sulfuric acid process titanium dioxide production

2020-06-24View Original

Thread Content

     In the traditional sulfuric acid process for producing titanium white, the filtration of titanium slurry often comes to a halt due to clogged filter cloths; now, a new type of diatomite filter aid is used to resolve this issue.   In the past, during the production of titanium dioxide using the sulfuric acid method, charcoal powder was mostly used as a filter aid. The production of charcoal powder led to the degradation of forest resources; meanwhile, China possesses abundant diatomite resources. . Currently, 60% of the diatomite mined worldwide is used to produce filtering materials, with the vast majority of this being used to manufacture diatomite filter aids. The diatomite used in our country has a high silica content; after acid washing and drying, the silica content in the resulting burned diatomite can reach over 88%. It possesses good acid resistance, which makes it suitable for use as a filter aid in titanium liquid filtration – a material that is loose, porous, and has excellent adsorption and compressive properties. However, our country is significantly lagging behind in the development and utilization of diatomite resources, and has yet to convert its resource advantages into practical benefits.   Under consistent filtration conditions, compared with the charcoal powder originally used, the amount of diatomite filter aid required is significantly reduced, thereby lowering costs. At present, diatomite filter aids are already being used in titanium dioxide manufacturers in Guangxi, Sichuan, Yunnan and other regions. .   When diatomite filter aids are used for filtering titanium melt, preliminary coating is essential; that is, before the filtration process begins, the diatomite filter aid is first applied to the filtering medium, namely the filter cloth. When filtering titanium melt containing a large amount of solid colloidal impurities, or when filtering titanium melt with high concentration and viscosity, it is necessary to add an appropriate diatomite filter aid to the titanium melt. Otherwise, the surface of the pre-coating will quickly be filled with solid combat colloid impurities, blocking the filtration pores.   Linjiang Xinghui Filter Aid Co., Ltd. is located in the Ma’anshan ore deposit area in the Changbai Mountains region of Jilin Province, which is the largest diatomite resource area in Asia. This ore deposit has proven industrial reserves of over 600 million tons, making it one of the most promising diatomite deposits in the world for further development. The company mainly provides information on diatomite, food-grade diatomite, calcined diatomite, diatomite filter aids, diatomite manufacturers, and diatomite companies. To learn more about diatomite, please visit our official website at www.china-diatomite.com.cn.

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.