There are two types of imported kaolin: coal based imported kaolin and imported kaolin. The whiteness of imported kaolin is one of the important indicators determining its application value, and the main factor causing the decrease in whiteness of imported kaolin is the impurity content. Impurities can be roughly divided into two categories: the first category is the organic matter deposited on Kaolinite, namely organic carbon, which can dye the imported kaolin gray black. The second type of substance is the pigment elements iron and titanium. Organic carbon can be removed during high-temperature calcination, so the main factor affecting the whiteness of imported kaolin is iron.

The common iron bearing minerals in imported kaolin are Pyrite, Limonite, Hematite, Siderite, Magnetite and potash, among which iron oxide is the most common. These iron ore materials will make imported kaolin appear in varying shades of gray, green, brown, and pink

This will lower Gaoling

The white color of the soil. The titanium content is too high, and the imported kaolin black powder is not white enough, so the market value is not high. Whiteness determines market value.

There are two main forms of titanium in imported kaolin: one is titanium, which exists in Kaolinite and is rich in minerals (such as mica and titanium dioxide), called structural titanium; The other form is independent iron ore, called free titanium. In order to increase the whiteness of the product to the specified range, corresponding deionization measures must be taken. Dear customers and friends, if you have imported kaolin purification technology, let's take a look at Wanjiade's imported kaolin magnetic separation equipment. There is always a solution, and the whitening series must meet your needs. Make your imported kaolin more valuable.