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Classification of brown corundum by smelting method

Views: 57     Author: SEPPE     Publish Time: 2021-02-01      Origin: SEPPE Technologies

According to the smelting method, brown corundum can be divided into: dumping furnace type and fixed furnace type.


The dumping furnace can be produced continuously, with high mechanization, reasonable thermal energy efficiency, relatively low unit power consumption, no waste, no need to repair the furnace every time, high production efficiency, but large investment, it is currently the most commonly used corundum smelting method;


Fixed furnace intermittent production, low degree of mechanization, low thermal energy utilization rate, high unit power consumption. The furnace must be repaired before each smelting, but the investment is small, the equipment is simple, and the operation is simple, It is currently the main method of smelting corundum in small abrasive plants. 


Compare two smelting methods. 

The brown corundum using the dumping furnace method has a silica content of less than 1%.

The brown corundum using the fixed furnace method has a silica content of more than 1%.

The brown corundum produced by the dumping furnace method has more corundum crystal aggregates and smaller crystal sizes.

The brown corundum produced by the fixed furnace method has larger crystal size, higher grinding strength and hardness.

The color of dumping furnace brown corundum is darker than that of fixed furnace brown corundum.

The hardness of dumping furnace brown corundum is greater than that of fixed furnace brown corundum.

The price of dumping furnace is higher.

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