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Aluminum Oxide Blasting Grit Wholesale Suppliers USA

The life of the bottom blowing oxygen converter lining is lower than that of the top blowing converter, especially the life of the bottom lining body is shorter(white aluminium oxide 180/220). The brickwork is jealous. The hit rate reached 96.1%. The average consumption of refractories is about 4.5 kg / ton of steel(white fused alumina abrasives); magnesium dolomite bricks and tar magnesium bricks, and the average age of the furnace in the country is 350 to 550 times.


Aluminum Oxide Blasting Grit Wholesale USA MOQ: 1 Ton! 19 Years Experience Aluminum Oxide Blasting Grit Wholesale Supplier, 35,000m² Workshop Area, Free Samples, Fast Delivery!


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Therefore, the Japanese oxygen converter mainly uses magnesium dolomite bricks as the lining, and develops from tar-bound bricks to high-temperature fired bricks(steel grid). The raw materials are pure and sintered Better, the quality of bricks has been greatly improved. At the same time, the service life of the furnace linings of Fildo is generally about 150 times, for example(white corundum price), the consumption of refractory materials is 6 ~ 10 kg / ton of steel.


The bottom-blown oxygen converter of the American Steel Company's Gerry Plant was completed and put into production in February 1973(brown fused alumina). The average age of oxygen converters in West Germany is 500 ~ 550 furnaces, and the consumption of refractory materials is 2.5 ~ 3.0 kg / ton of steel(brown alumina abrasive); the refractory materials for oxygen converters in the UK are 20% for magnesium bricks and 80% for dolomite bricks. 


Generally, the detachable bottom is used for replacement(glass bead blasting media suppliers). On the detachable furnace bottom lining, there are several nozzles with a certain distance to supply oxygen blowing and blowing coolant. The other parts are basically the same as the top blowing converter, and the material of the furnace lining is similar(brown fused alumina micro). The detachable bottom lining of the bottom-blown oxygen converter is damaged quickly, which is one of the weak links of the lining.


The main reason for the damage: there are more phoenix bricks on the bottom of the furnace(brown aluminum oxide), which weakens the strength of the brickwork; the temperature gradient of the bottom of the furnace is large and the changes are frequent, causing the lining to crack or flake(white fused aluminum oxide refractory). At the beginning of the production of the Q-BOP bottom-blown oxygen converter in the Chiba Plant in Japan, the service life of the furnace bottom lining was 267 to 700 times.


The chemical composition of magnesia carbon brick is: MgO, 77.3%, CaO, 0.6%, C21.4%(garnet suppliers). The bulk density is 2.79 g / cm, the compressive strength is 419 kg / cm, and the flexural strength at 1000 ° C is 76 kg / cm. When masonry, special fire clay is used to eliminate the stress caused by thermal shadow expansion around the tuyere brick(20 mesh aluminium oxide grit). The joint at the bottom of the furnace is compacted with alkaline refractory ramming material.


When replacing the bottom of the furnace, due to the higher temperature, the spraying method can be used to build the connection of the bottom of the furnace(brown aluminium oxide). In April 1980, the service life of the bottom lining reached 2063 times, and the consumption of refractories was reduced to 0.96 kg / ton of steel, the lining of the French oxygen converter is made of tar dolomite bricks, and the service life of the furnace wall was about 1,000 times(white aluminum oxide 80 grit).


During the smelting operation, the laser method was used to measure the thickness of the furnace lining(garnet abrasive), and the electronic computer was used to dynamically control the end point carbon and temperature. Therefore, the service life of the bottom-blown converter has been greatly improved, and it has exceeded 2000 furnace times a few days ago(brown aluminium oxide grit). In June 1979, the plant created a record of furnace wall life of 3692 times.


white aluminium oxide
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Brown Fused Alumina And White Fused Alumina MOQ: 1 Ton! 19 Years Manufacturing Exprience, 35,000m² Workshop Area, Factory Price, Free Samples, Fast Delivery!

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