Development of Magnesium - chrome Refractory Products for Nonferrous Metal Proce

Posted by adela li on March 13th, 2017

Natural and synthetic raw materials, natural raw materials Magnesite (including synthetic magnesia) Natural magnesite (including synthetic magnesia) and chrome ore is the production of magnesium chrome refractory raw material. In addition, there are synthetic raw materials of a sintered into magnesium chrome and fused synthetic chromium chrome and so on. The quality of raw materials seriously affect the performance of products. In order to make the microstructure of the magnesia-chrome refractory a direct combination of the direct combination of the magnesium-solid solution of the refractory lining magnesium-solid solution, the combination of the magnesium-solid solution spinel solid solution must have a high purity raw material, which is produced directly with the combination of magnesia Prerequisites for bricks.

China's chrome ore resources are poor, and first of all to meet the needs of metal smelting and chemical industry.

Synthetic raw materials With the development of smelting technology, the lining of the harsh parts of the refractory materials used in the increasingly demanding, in order to meet the requirements of smelting technology, Luo also developed high-quality high-performance synthetic raw materials, mainly sintered synthetic chromium Sand and fused synthetic magnesia chrome sand, magnesia chrome refractory high alumina fire brick structure and performance of magnesium chrome brick varieties of many, the name of chaos, easy to confuse, in this more standardized way to explain.

Directly combined with magnesium chrome With the continuous development of high temperature firing technology, refractory firebrick the current ultra-high temperature tunnel kiln highest firing temperature of more than 1800e, refractory molding equipment) brick machine has more than 1000t, and can vacuum, the raw materials for mineral processing, So that the magnesite and chrome ore impurity refractory brick for sale content greatly reduced, for the direct combination of magnesium chrome brick production to create a material basis, so a new generation of magnesium chrome refractories) directly combined with magnesium chrome refractory on the advent of direct combination of magnesium chrome refractories (Solid solution) and perovskite (solid solution) spinel (solid solution) of the direct degree of high degree of integration, good resistance to slag erosion, high temperature volumetric stability, and now Widely used in nonferrous metallurgical furnace. With the continuous strengthening of non-ferrous metal smelting technology, it is required that the corrosion resistance of refractory material is better and the high temperature strength is higher, and the density of sintered high purity magnesium chrome material is further improved, Reduce the porosity, so that magnesite and chrome ore (light magnesium powder or magnesite and chrome ore) fully and evenly react to form a more ideal structure of magnesium and solid solution of spinel solid solution, which produced a fused synthetic magnesium Chrome material, with this raw material brick called melt and then combined with magnesia chrome brick, the brick is characterized by low porosity, high compressive strength, good corrosion resistance, high temperature strength.