Why to restrict the use of magnesian chromic brick in recent years

Magnesian chromic brick
The use that restricts magnesian chromic brick in recent years basically is the consideration that stems from environment and healthy safety. The chromic element in magnesian chromic brick may be used in bricky body release in the process, and 6 price chromium is a kind of carcinogen, cause a harm possibly to human body and environment. Accordingly, to protect the security of the worker's health and environment, a few use that begin chromic to magnesium brick with the code of national sex and standard locally undertake limitative.
Additional, the manufacturing process of magnesian chromic brick produces environmental pollution possibly also, include liquid waste, waste gas and solid trash to wait, cause an effect to surroundings. Accordingly, a few places also published plan of law of environmental protection, the production of chromic to magnesium brick has limitation or standard.
Magnesian chromic brick is a kind of commonly used fireproof material, have the following and main characteristic:
High temperature resistant function: Magnesian chromic brick can hold stable property below high temperature environment, can bear normally the high temperature of 1500 Celsius above.
Corrosion resistance: Magnesian chromic brick has better corrosion resistance to a lot of chemical material and metallic liquid, apply to all sorts of caustic gas and liquid work environment.
High strenth and wearability: The physical performance of magnesian chromic brick is better, have higher compressive strength and wear-resisting caustic sex, can bear to particular machine is pounded and wear away.
Thermal shock stability: Magnesian chromic brick has better thermal shock stability, structural stability can maintain below the environment that fast temperature changes, produce craze not easily or broken.
Chemical stability: Magnesian chromic brick has better chemical stability below normal temperature, get not easily of chemical material erode or dissolve.
Workmanship is mature: The manufacturing technology of magnesian chromic brick is relatively mature, manufacturing process is relatively simple, cost is inferior, apply extensively at the liner of equipment of all sorts of high temperature industry and furnace kiln.
To replace magnesian chromic brick, a few new-style fireproof material are come out by development, brick of if magnesian iron is pointed brick of spar brick, magnalium pointed spar, magnesian zirconium, they have similar fireproof property, but smaller to environment and healthy influence, because this got more and more application.