Coil protecting cement gum for intermediate-frequency furnace and preparation and construction methods
A technology for coil protection and intermediate frequency furnace, which is applied in the field of coil protection cement for intermediate frequency furnaces, can solve the problems of poor insulation and thermal conductivity of molten steel through furnace resistance and cannot meet smelting requirements, etc., and achieves easy identification, convenient construction, The effect of protecting the coil part
Inactive Publication Date: 2019-03-26
海城市金福锋科技有限公司
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- Application Information
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Problems solved by technology
Because the coil protection material in the working environment of the coil part of the intermediate frequency induction furnace has been in contact with the high-temperature metal solution for a long time, and the coil cement is in contact with the electricity used for the coil. Furnace piercing resistance performance is not ideal, can no longer meet the needs of smelting
Method used
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[0028] The composition of the protective cement for the coil of the intermediate frequency furnace is shown in Table 1 below;
[0029] Table 1: Coil protection cement composition ratio for intermediate frequency furnace (parts by weight)
[0030]
Example 1
Example 2
Example 3
Example 4
Example 5
Example 6
Fused white corundum
85
90
95
92
88
89
Iron oxide red 325 mesh
2
3
5
4
3.5
2.5
CA-71 cement 325 mesh
5
2
8
10
6
4
[0031] The particle size composition of fused white corundum in the composition of the intermediate frequency furnace coil protection clay is shown in Table 2 below;
[0032] Table 2: Particle size composition of fused white corundum in the coil protection cement for intermediate frequency furnaces (parts by weight)
[0033]
[0034]
[0035] The preparation method of the coil protection cement for the intermediate frequency furnace comprises t...
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Abstract
The invention relates to coil protecting cement gum for an intermediate-frequency furnace and preparation and construction methods. The product is light-pink powder and is prepared from the followingcomponents in parts by weight: 85-95 parts of fused white corundum, 1-5 parts of iron oxide red and 2-10 parts of CA-71 cement. The fused white corundum is prepared from the following components in parts by weight: 1-10 parts of 1-3 mm particle, 40-60 parts of 0-1 mm particle and 25-45 parts of 200-mesh fine powder. The granularity of the iron oxide red is 325 meshes. The granularity of the CA-71cement is 325 meshes. The finished cement gum product comprises the chemical components of 0.5%-1% of MgO, 1.6%-2.1% of Fe2O3, 0.5%-1.5% of SiO2, 3.5%-5.6% of CaO and more than or equal to 90% of Al2O3. The coil protecting cement gum and the preparation and construction methods have the beneficial effects that in the use process of the intermediate-frequency furnace, the fused white corundum (Al2O3) and the iron oxide red (Fe2O3) form iron-aluminium spinel which has the characteristics of penetration resistance, slag resistance and good heat conductivity, so that the insulativity, refractoriness and heat conductivity are improved, and the service life of the cement gum is prolonged; due to good high-temperature heat conductivity, the electricity consumption of the intermediate-frequency furnace can be reduced.
Description
technical field [0001] The invention relates to a coil protective glue for an intermediate frequency furnace used in the fields of ferrous metallurgy and nonferrous metallurgy. Background technique [0002] The intermediate frequency induction furnace is an important branch of the induction furnace. It has been widely used in steelmaking and non-ferrous smelting due to its high efficiency, energy saving, low pollution, and easy operation. The coil protection material of intermediate frequency induction furnace widely used at home and abroad is mainly bauxite coil cement. Because the coil protection material in the working environment of the coil part of the intermediate frequency induction furnace has been in contact with the high-temperature metal solution for a long time, and the coil cement is in contact with the electricity used for the coil. The furnace piercing resistance performance is not ideal, which can no longer meet the needs of smelting. Contents of the inven...
Claims
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IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3208C04B2235/3222C04B2235/3272C04B2235/3418
Inventor 王相丰裘伟王维
Owner 海城市金福锋科技有限公司