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Magnesium, aluminum and titanium brick for copper smelting furnace

A copper smelting furnace, magnesium-aluminum technology, applied in the field of refractory materials, can solve problems such as nonconformity, ion pollution, lack of chromite resources, etc., and achieve the effects of avoiding pollution, excellent sintering performance, and good economic and social benefits.

Inactive Publication Date: 2013-04-03
河南瑞泰耐火材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnesium-chromium refractories are widely used in copper smelting furnaces because of their high strength and good corrosion resistance and permeability, but there are Cr 6+ The ion pollution problem does not meet the current national environmental protection requirements, and my country's chromite resources are scarce

Method used

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  • Magnesium, aluminum and titanium brick for copper smelting furnace
  • Magnesium, aluminum and titanium brick for copper smelting furnace
  • Magnesium, aluminum and titanium brick for copper smelting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: A magnesia-aluminum-titanium brick for a copper smelting furnace, expressed in weight percent, adopts 18% of sintered magnesia with a particle size of 4-2mm, 8.5% of sintered magnesia with a particle size of 2-0mm, and electro-sintered magnesia with a particle size of 4-0mm. 18% magnesia, 32% fused magnesia with particle size ≤0.088mm, 20% fused spinel with particle size ≤0.045mmTiO 2 3.5% fine powder, add calcium lignosulfonate of 3.5% of the total weight of the above raw materials in addition, and its density is 1.3g / cm 3 .

[0018] Preparation method: Weigh the raw materials according to the ratio, mix them with a wet mill, shape them with a friction brick press, put the shaped bricks into a drying kiln, dry them at 120°C for 10 hours, and then fire them at a high temperature of 1600°C. Keep warm for 6 hours, and leave the kiln after cooling. The performance indicators are shown in Table 2.

[0019] Table 2 Performance Index

[0020]

Embodiment 2

[0021] Example 2: A magnesia-aluminum-titanium brick for a copper smelting furnace, expressed in weight percent, adopts 21% of sintered magnesia with a particle size of 4~2mm, 10% of sintered magnesia with a particle size of 2~0mm, and electro-sintered magnesia with a particle size of 4~0mm. Magnesia 15%, fused magnesia with particle size ≤0.088mm 33%, fused spinel with particle size 4~1mm 17.5%, particle size ≤0.045mmTiO 2 3.5% fine powder, in addition add 3.5% bittern solution of the total weight of the above raw materials, its density is 1.22g / cm 3 .

[0022] Preparation method: Weigh the raw materials according to the proportion, mix them with a wet mill, shape them with a friction brick press, put the shaped bricks into a drying kiln, dry them at 160°C for 8 hours, and then fire them at a high temperature of 1630°C. Keep warm for 3 hours, and leave the kiln after cooling. The performance indicators are shown in Table 3.

[0023] Table 3 Performance Index

[0024]

Embodiment 3

[0025] Example 3: A magnesia-aluminum-titanium brick for a copper smelting furnace, expressed in weight percent, adopts 18% of sintered magnesia with a particle size of 4~2mm, 15% of sintered magnesia with a particle size of 2~0mm, and electro-sintered magnesia with a particle size of 4~0mm. Magnesia 16%, fused magnesia with particle size ≤0.088mm 30%, fused spinel with particle size 4~1mm 17.5%, particle size ≤0.045mmTiO 2 3.5% fine powder, plus 4% polyphosphate of the total weight of the above raw materials, the density is 1.4g / cm 3 .

[0026] Preparation method: Weigh the raw materials according to the ratio, mix them with a wet mill, shape them with a friction brick press, put the shaped bricks into a drying kiln, dry them at 110°C for 18 hours, and then fire them at a high temperature of 1650°C. Keep warm for 6 hours, and leave the kiln after cooling. The performance indicators are shown in Table 4.

[0027] Table 4 Performance Index

[0028]

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Abstract

The invention relates to a magnesium, aluminum and titanium brick for a copper smelting furnace. The magnesium, aluminum and titanium brick comprises the following raw materials of: 26 to 40 percent of sintered magnesium sand with the particle size of 4 to 0 mm, 5 to 20 percent of electrically smelted magnesium sand with the particle size of 4 to 0 mm, 20 to 47 percent of electrically smelted magnesium sand with the particle size of less than 0.088 mm, 17 to 25 percent of electrically smelted spinel with the particle size of 4 to 1 mm, 3.5 to 5 percent of TiO2 fine powder with the particle size of less than 0.045 mm, and adhesive accounting for 3.5 to 5 percent of the total weight of the above materials. The magnesium, aluminum and titanium brick is suitable for the copper smelting industrial kiln, has the advantages of high sintering performance, thermal vibration stability, erosion resistance and seepage resistance, can replace a magnesium and chromate fireproof material for the copper smelting furnace and has extremely high economical and social benefits, and pollution of Cr6<+> to the environment is avoided.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a magnesium-aluminum-titanium brick for a copper smelting furnace. Background technique [0002] In recent years, with the development of copper smelting technology, especially the progress of pyro-copper smelting technology and the expansion of production capacity, the requirements for refractory materials for copper smelting furnaces are becoming more and more stringent. Magnesium-chromium refractories are widely used in copper smelting furnaces because of their high strength and good corrosion resistance and permeability, but there are Cr 6+ The ion pollution problem does not meet the current national environmental protection requirements, and my country's chromite resources are scarce. Therefore, it is an inevitable trend to accelerate the development, development and application of chromium-free basic refractory materials. [0003] Research and ana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622
Inventor 徐琳琳刘锡俊任向阳刘虎保王庆朝周珍妮刘昭郭学亮尹超男徐如林
Owner 河南瑞泰耐火材料科技有限公司