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Iron minerals are very common coloring substances in kaolin, and each type of kaolin has different degrees of distribution. Common iron minerals include pyrite, limonite, hematite, siderite, magnetite, etc. These iron minerals will make kaolin appear gray, brown, pink, etc. to varying degrees, reducing the whiteness of kaolin. Due to the different properties of iron minerals, different iron removal processes can be used. Let's learn about it together.Details>>
Kaolin is a common clay mineral in nature and the main raw material for making white pigments. Among them, whiteness is the main performance parameter that affects the value of kaolin. Kaolin often contains harmful impurities such as iron, organic matter, and dark matter. These impurities will make kaolin appear different colors and affect its whiteness. Therefore, kaolin must be purified to remove impurities before using it.Details>>
Bauxite is an important aluminum-containing mineral aggregate, mainly composed of aluminum hydroxides such as diaspore, boehmite and gibbsite, and also contains a small amount of impurity elements such as iron, silicon, and titanium. Bauxite is a key raw material for the production of metallic aluminum and various aluminum products. Purification and impurity removal are particularly important, and flotation is one of the important methods for impurity removal in bauxite beneficiation. In this article, we will learn about the bauxite flotation methods?Details>>
Kaolin is a very and important non-metallic mineral that is widely used in papermaking, refractory materials, ceramic and rubber fillers, coatings, white cement raw materials, enamel glazes, daily cosmetics, building materials, petroleum, chemicals and other industrial fields. Below we will learn about kaolin clay from its types, characteristics and uses.Details>>
The microbial method for iron removal and purification of kaolin mainly uses microorganisms to dissolve iron impurities into soluble iron, and then remove iron. Three commonly used methods are oxidation, leaching and microbial reduction. For the three kaolin production methods, each has its own characteristics and suitable ores. The specific selection method should be determined based on the mineral processing test analysis. Through test analysis, a reasonable production and processing process can be designed for it to effectively obtain high grade. of kaolin concentrate.Details>>
The chemical production and processing of kaolin clay uses chemicals to selectively dissolve the iron impurities present in kaolin clay, and then removes the iron. There are mainly oxidation method, reduction method, oxidation-reduction method, acid solution method and chlorination method. In actual mineral processing plants, the kaolin selection process is also different due to the differences in its own ore properties. A suitable process plan should be designed according to the ore properties to obtain an ideal kaolin product.Details>>
Kaolin is a kind of fine-grained clay or clay rock mainly composed of kaolinite minerals. Its whiteness is an important indicator in determining the value of kaolin. In order to minimize the color improvement and improve the whiteness, it needs to be completed through various production processes. This article mainly introduces the chemical production process of kaolin. Common physical production methods of kaolin mainly include magnetic separation, flotation and selective flocculation. In actual beneficiation plants, there are also chemical methods, microbial methods, etc. The specific process to choose needs to be analyzed based on the ore properties of kaolin to ensure the efficient purification and whitening of kaolin, which has reached industrial application.Details>>
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