Zibo Dingqi Chemicals Co., Ltd. is one of the most experienced manufacturers and suppliers of iron-ferric aluminum sulfare granular in China. Welcome to wholesale high quality iron-ferric aluminum sulfare granular made in China here from our factory. For price consultation, contact us.
Classification of Iron-Free Aluminum Sulfate
Iron-free aluminum sulfate can be classified into the following categories based on its purity and application:
- Industrial Grade Iron-Free Aluminum Sulfate:
Lower purity, primarily used in industrial applications such as water treatment and paper manufacturing.
- Food Grade Iron-Free Aluminum Sulfate:
High purity, compliant with food safety standards, used in food additives and drinking water treatment.
- Pharmaceutical Grade Iron-Free Aluminum Sulfate:
Highest purity, used in pharmaceutical and medical applications.
Applications of Iron-Free Aluminum Sulfate in Titanium Dioxide Production
In titanium dioxide production, iron-free aluminum sulfate is mainly used for:
- Neutralizing Agent:
Adjusts the pH of the reaction system to ensure the chemical stability of titanium dioxide.
- Flocculating Agent:
Promotes the flocculation of suspended particles, facilitating subsequent separation and filtration.
- Purifying Agent:
Removes impurities to enhance the purity and whiteness of titanium dioxide.
Production Process of Iron-Free Aluminum Sulfate
The production process of iron-free aluminum sulfate mainly includes the following steps:
- Raw Material Preparation:
High-purity bauxite or aluminum hydroxide is used to ensure low iron content in the raw materials.
- Reaction Process:
The raw materials react with sulfuric acid to generate an aluminum sulfate solution.
Reaction Equation: Al2O3+3H2SO4→Al2(SO4)3+3H2OAl2O3+3H2SO4→Al2(SO4)3+3H2O
- Filtration and Purification:
Insoluble substances are filtered out, and further purification is conducted to reduce the content of impurities such as iron.
- Crystallization and Drying:
The solution is concentrated and cooled to crystallize, yielding solid aluminum sulfate, which is then dried.
- Packaging:
The final product is packaged in 50 kg bags, 25 kg bags, or ton bags, and customized packaging is available according to customer requirements.
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