What is the biggest difference between brown fused alumina pouring furnace and stationary furnace

The difference between the two is that the smelting method used is different on the surface, but the biggest difference in the product is that the SiO2 content in the fixed furnace brown fused alumina is greater than 1%.

The brown fused alumina SiO2 content produced by the dumping furnace is less than 1%.

This is the most straightforward way to distinguish between the two furnaces.

**Under the same particle size, the pouring furnace is basically higher than the fixed furnace.

The smelting methods of brown fused alumina can be divided into frit method, dumping method, and exile method.

The frit method is intermittent production, the degree of mechanization is low, the utilization rate of heat energy is low, the unit power consumption is high, there is a lack of material, the furnace must be repaired before each smelting, but the investment is small, the equipment is simple, the operation is simple, it is the main method of smelting corundum in small abrasive factories at present. The pouring method can produce continuously, the degree of mechanization is high, the thermal energy is reasonable, the unit power consumption is low, there is no lack of material, there is no need to repair the furnace every time, the production efficiency is high, but the investment is large, and it is the most commonly used corundum smelting method at present. The exile method is also continuous production, with a high degree of automation, and has other advantages of the dumping method, but the investment is large and the equipment is complex, so it has not been officially applied in China.

The technical indicators of the pouring method are generally better than those of the frit method. The comparison of the technical indicators of the two processes is shown in the table:

Comparison of technical indicators of the pouring method and the frit method

Electric arc furnace capacity Process method Unit power consumption (kw·h t) Hourly output (kg h) Unit material consumption (t t).

2400kva Dump Method 2540 1050

2400kva frit method 2820 880

In addition to the above differences, there are also differences in the quality of corundum products. The pouring method and the exile method produce more corundum crystal aggregates and smaller crystal sizes, and the self-sharpening is greater than that of the frit method because the vitreous and titanium minerals are distributed on the grain boundaries. The frit method produces more single crystals of corundum, larger crystal size, higher abrasive strength and hardness.

Brown fused alumina is mainly used as a refractory material, it has few impurities, high purity, crystal, and is not easy to break, often used in grinding wheels, sandblasting, and other abrasives. It is suitable for all kinds of common steel, general steel, smeltable iron, and has the characteristics of no explosion, no pulverization, and no cracking when used.

As a commonly used corundum abrasive, brown fused alumina is mainly smelted by fixed furnace block, dumping furnace smelting, and flow smelting, but the different effects of brown fused alumina after smelting by different methods are also very different

1.Dumping furnace smelting method:The brown fused alumina smelted by the pouring furnace is characterized by more crystalline volume, small crystal volume and high vitreous quality, so the relative toughness is poor, and the brittleness is improved to a certain extent, which is suitable for abrasives and refractory materials.

2.Fixed furnace block method:The fixed furnace block is opposite to the dumping furnace smelting method in some places, so the use is also different, the brown fused alumina smelted by the fixed furnace solution block method has less crystal volume, large crystal volume and less vitreous.

The brittleness is poor but the toughness is good, and the wear resistance is greatly improved, this method is suitable for the manufacture of abrasives.

On the surface, the smelting method of fixed furnace solution block and dumping furnace is only different, but in fact, the most fundamental difference between them is that the SIO2 content in the fixed furnace brown fused alumina is greater than 1% and the content of brown fused alumina SiO2 produced by the dumping furnace is less than 1%.

Brown fused alumina smelting belongs to the mineral thermal electric furnace smelting method, there are three main smelting methods: fixed furnace frit method, dumping furnace smelting method and exile smelting method, due to the large scale of investment in exile smelting, at present, China mainly adopts fixed furnace frit method and dumping furnace smelting method

1.The brown fused alumina produced by the pouring furnace has many crystalline aggregates, small crystal size, high glass phase and distribution on the grain boundary, so the toughness is poor, the brittleness is large, the abrasive particles are easy to fall off, the self-sharpening is good, and the compactness is good, which is more suitable for consolidating abrasives and refractory materials.

2.The brown fused alumina produced by the fixed furnace has less crystalline aggregates, large crystal size, and less vitreous, so it has poor brittleness, capriciousness, and good wear resistance. Due to the large crystal, good toughness and brittleness, the brown fused alumina produced by this smelting method is more suitable for the manufacture of coated abrasives, so it is still the most used abrasive in the production of abrasive belts.

On the surface, the smelting method of fixed furnace solution block and dumping furnace is only different, but in fact, the most fundamental difference between them is that the SIO2 content in the fixed furnace brown fused alumina is greater than 1% and the content of brown fused alumina SiO2 produced by the dumping furnace is less than 1%.

1.The color of the brown fused alumina of the pouring furnace is heavier than that of the fixed furnace brown fused alumina, blackened, and purer than the color of the second-grade brown fused alumina;

2.The hardness of brown fused alumina in the pouring furnace is higher than that in the fixed furnace brown corundum;

3.Dumping furnace brown fused alumina** per ton is more than 200 yuan higher than that of the fixed furnace.

1. The brown fused alumina produced by the dumping furnace (method) has many crystalline aggregates, small crystal size, high glass phase and distribution on the grain boundary, so the toughness is poor, the brittleness is large, the abrasive particles are easy to fall off, the self-sharpness is good, the compactness is good, and it is more suitable for consolidating abrasives and refractories, but the investment is large, and it is the most commonly used corundum smelting method at present.

2. The brown corundum produced by the fixed furnace (method) has less crystalline aggregates, large crystal size and less vitreous, so it has poor brittleness, large toughness and good wear resistance. Due to the large crystal, good toughness and brittleness, the brown fused alumina produced by this smelting method is more suitable for the manufacture of coated abrasives. Therefore, it is still the most used abrasive in abrasive belt production.

The production process of the stationary furnace is white corundum.

More commonly, the white fused alumina products from this production process have the characteristics of high toughness, which can meet the polishing of some products. White corundum, produced in a pouring furnace, has the characteristics of good self-sharpening, which is the difference between the two.

At the same time, in the actual production process, the dumping furnace Yanchang has a higher utilization rate of raw material alumina, and the white fused alumina produced is of higher purity, so if you need to use higher purity, you need to choose the white fused alumina produced by the dumping furnace.

1. Brown corundum, as a corundum material, is widely used in industrial use. With the improvement of production requirements, the requirements for the performance of brown fused alumina have gradually increased. The brown fused alumina produced by the dumping furnace smelting method has many crystalline aggregates, small crystal size, abrasive particles are easy to fall off when used, and its self-sharpening and compactness are more suitable for the production and use of consolidated abrasives.

2. Brown fused alumina in the dumping furnace has the performance characteristics of high temperature resistance and corrosion resistance, and is also often used in the use of refractory materials such as various high-combustion dust teasing furnace kilns, smelting blast furnaces, ceramics and so on. It can also be used as a blast furnace and utensils for smelting metals, alloys, glass, etc.

3. The SiO2 content of brown fused alumina in the pouring furnace is low, which is an obvious feature that distinguishes it from other brown corundum, and the performance of the corundum products produced by Brother Qiao has the characteristics of high hardness and high abrasive strength. The dumping furnace smelting method has a high degree of mechanization, reasonable capacity utilization and high production efficiency, which is the most commonly used corundum smelting method in brown fused alumina manufacturers.

Summary. Finally, the range of use of brown fused alumina: 1

Sandblasting - abrasive hardness is moderate, high bulk density, no free silica, specific gravity, good toughness, is an ideal "environmentally friendly" sandblasting material, widely used in aluminum profiles, copper profiles glass, washed denim precision molds and other fields; 2.Free grinding - grinding grade abrasive, used in the free grinding of picture tubes, optical glass, monocrystalline silicon, lenses, clock glass, crystal glass, jade and other fields, is a commonly used grinding material in China; 3.Resin abrasives - the abrasives have the right color, good hardness, toughness, suitable particle section type and cutting edge retention, which are applied to resin abrasives with ideal results; 4.

Coated abrasives - abrasives are raw materials for sandpaper, gauze and other manufacturers; 5.Functional filler - mainly used for automobile brakes, special tires, special building products, etc., can be used as a highway pavement. Airstrip.

Dock. Parking lot. Industrial flooring.

wear-resistant materials such as sports venues;

Kiss, this depends on what you are used for. From the perspective of the user, the larger bend of the transformer capacity is conducive to the development of production. However, from the economic aspect, the transformer can meet the production needs of the best, if the reactive power is large, the reactive power should also be increased, the power factor is too low, and the monthly electricity bill is also considerable.

So it's not that more power is better.

Then there is brown corundum, commonly known as Jinkong corundum, which is a tan artificial corundum made by melting and reducing three raw materials of bauxite, carbon materials and iron filings in the electric furnace, so it is named. The main chemical component of brown fused alumina is Al2O3, the content of which is in, and contains a small amount of Fe, Si, Ti, etc.

Finally, the range of use of brown fused alumina: 1Sandblasting-shirt skin-abrasive hardness is moderate, high bulk density, no free silica, or the difference ratio is large, good toughness, is an ideal "environmentally friendly" sandblasting material, widely used in aluminum profiles, copper profiles glass, washed denim precision molds and other fields; 2.

Free grinding - grinding celery-grade abrasives, which are used in the free grinding of picture tubes, optical glass, monocrystalline silicon, lenses, clock glass, crystal glass, jade and other fields, and are commonly used grinding materials in China; 3.Resin abrasives - the abrasives have the right color, good hardness, toughness, suitable particle section type and cutting edge retention, which are applied to resin abrasives with ideal results; 4.Coated abrasives - abrasives are raw materials for sandpaper, gauze and other manufacturers; 5.

Functional filler - mainly used for automobile brakes, special tires, special building products, etc., can be used as a highway pavement. Airstrip. Dock.

Parking lot. Industrial flooring. wear-resistant materials such as sports venues;