Calcined Diatomaceous Earth CAS 91053-39-3 is purified calcined mineral filter aid specially developed for acidic liquid filtration. High-temperature calcination optimizes pore structure and greatly improves acid resistance. The rigid porous skeleton forms permeable filter cake to capture gypsum residues, solid sediments and colloidal particles generated during phosphoric acid production. It ensures clear filtrate and continuous filtration operation, widely applied in wet-process phosphoric acid

Product Detail

Product Overview

Calcined Diatomaceous Earth CAS 91053-39-3 for Phosphoric Acid Filtration is acid-resistant filter aid for phosphate chemical industry. Ordinary uncalcined diatomite is susceptible to corrosion in acidic environment and leads to filter cake collapse. After high-temperature calcination treatment, this grade possesses stable skeleton and strong acid resistance. It removes solid impurities from crude phosphoric acid, helping phosphate enterprises improve phosphoric acid quality and filtration efficiency.

Key Features

CAS Number: 91053-39-3, High-temperature Calcined Acid-resistant Diatomaceous Earth
Stable rigid porous structure, not easy to collapse under acidic working condition
Excellent interception effect on gypsum crystals, sludge and fine suspended solids
Good acid corrosion resistance, suitable for long-term phosphoric acid filtration
Form uniform filter cake, balance filtration speed and clarification performance
Loose filter cake, convenient for discharging and equipment cleaning
Stable particle size distribution, consistent filtration performance batch to batch
Compatible with pressure filter and vacuum filter used in phosphoric acid plant

Main Applications

Solid-liquid separation and clarification of wet-process crude phosphoric acid
Removal of gypsum slag and suspended impurities in phosphate chemical production
Filter aid for acidic inorganic liquid in chemical processing
Pre-coating medium for acid-resistant filtering equipment

Usage Guidance

Carry out pre-coating operation to build complete filter layer on filter cloth. Adjust adding dosage according to solid content of crude phosphoric acid. Avoid excessive feeding resulting in slow filtering velocity. Regularly inspect filter cake condition. Wear dust-proof mask during powder operation.

Storage & Package

Seal packages tightly. Store in dry ventilated warehouse, avoid dampness. Standard package: 25kg woven bag with PE inner liner. Shelf life: 24 months under dry sealed storage.

Service Support

Phosphoric acid filtration test samples available. COA and technical datasheet can be supplied on request. Stable bulk supply capacity. Welcome to inquire factory quotation.

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.