Magnesite dressing can only remove SiO2. If high purity is desired, Fe2O3, Al2O3 and very low ore can only be selected to remove SiO2. If comprehensive utilization of resources is considered to improve the grade, only high silica ore flotation can be selected. Manufacturer of fused magnesia

The higher the purity of high-purity magnesia is, the less the bonding phase is, and the more unstable it is. It is also not suitable for making refractory materials.

High purity magnesia from the perspective of market demand

What is the market demand for magnesia with MgO ≥ 98%? The variety structure of refractory raw materials should conform to the demand structure of the raw material market. In terms of the demand for steelmaking converters, except for products produced with high-purity magnesia with MgO ≥ 98% at the trunnions on both sides of the converter and slag line. Refractory products produced by high-purity magnesia in other regions.

Magnesite is a general term for the products of magnesite and other magnesia raw materials that have been calcined once or twice by high-temperature equipment such as shaft kiln and rotary kiln to reach the sintering degree. Magnesite has different classifications, among which the magnesite fired from natural magnesite is called sintered magnesite; It is formed by taking magnesite as raw material, smelting in electric arc furnace, reaching molten state and cooling Fused magnesia ; The magnesium oxide extracted from seawater is called seawater magnesia.

Seawater magnesia and sintered magnesia. The production technology of high-purity magnesia abroad is advanced, but because of the high production cost, it does not form an overall advantage.

The high-purity magnesia market operates stably, the downstream demand has not changed temporarily, and the manufacturer's quotation also continues to be stable.

Magnesite can be divided into natural magnesite and seawater magnesite or synthetic magnesite. Natural magnesite mainly comes from natural magnesite, but due to the quality restriction of raw ore, high-purity products are obtained. So far, seawater magnesite has become the main source of magnesite used in industrial developed countries. The theoretical content of MgO in magnesite is 47.3%, and other impurities include SiO2, iron, etc.