Characteristics of chromite flour for brick making
As a key raw material for the production of refractory bricks (such as magnesia-chrome bricks, chrome bricks, etc.), chromite flour has the following characteristics
High refractory performance
The main component of chromite flour is Cr₂O₃ (the content is usually not less than 46%), with a high melting point (about 2150℃) and a high sintering temperature (about 1850℃), which can maintain structural stability at high temperatures and is not easy to soften or deform.
When used as a refractory raw material, it can significantly improve the high-temperature oxidation resistance and corrosion resistance of the brick body, and is suitable for harsh environments such as ladle slag lines.
Excellent thermodynamic properties
It has good thermal conductivity, can quickly dissipate heat, and avoid local overheating; at the same time, it has outstanding thermal shock resistance, can withstand sudden cooling and heating changes, and prevent the brick body from cracking or peeling.
In a high temperature environment, it can form a stable spinel structure when combined with magnesia sand, enhancing the overall strength and thermal stability of the brick body.
Strong chemical stability
It exhibits low chemical reactivity at both room temperature and high temperature, and is not easy to react with alkaline slag, metal melt, etc., which prolongs the service life of refractory bricks.
High hardness and wear resistance
The Mohs hardness is about 5.5~6.0, which can enhance the mechanical wear resistance of refractory bricks and is suitable for high friction or impact conditions (such as metallurgical kiln lining)
Environmental protection and cost advantages
As a natural mineral raw material, it does not require chemical synthesis, avoids the risk of hexavalent chromium pollution, and has both environmental friendliness and low cost advantages.
Summary: Chromite flour has become the core raw material for manufacturing high-performance refractory bricks with its high refractoriness, thermal stability, chemical inertness and wear resistance, especially suitable for high-temperature industrial fields such as metallurgy and building materials.
The normal sizes of Haixu Abrasive Chrome Ore Powder Factory produce as follows:
180 mesh (85 microns), 200 mesh (75 microns), 270 mesh (53 microns), 325 mesh (45 microns), 400 mesh (38 microns), 500 mesh (25 microns), 600 mesh (23 microns), 800 mesh (18 microns), 1000 mesh (13 microns), 1200 mesh (12 microns), 1500 mesh (10 microns), 1600 mesh (9 microns), 1800 mesh (8 microns), 2000 mesh (6.5 microns), 2200 mesh (6 microns), 2500 mesh (3-5 microns)
