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Slag ball content control method for preparation of mineral wool from silicon-manganese slag

A control method and technology for silicon-manganese slag are applied in the field of preparing mineral wool from silicon-manganese slag, which can solve the problem of high thermal conductivity, and achieve the effects of low thermal conductivity, improved tensile strength, and easy operation.

Inactive Publication Date: 2018-06-19
NINGXIA JIYUAN JUNTAI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a method for controlling the slag ball content of mineral wool prepared from silicomanganese slag that reduces the content of mineral wool slag balls and solves the problem of high thermal conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The flux used for making mineral wool from hot silicomanganese slag consists of fluorite and magnesium oxide powder. Mix 5% fluorite and 3% magnesia powder in hot slag according to the mass percentage to make tempering material, mix fluorite and magnesia to make flux for silicomanganese slag making mineral wool, and heat slag in the holding furnace During the heating process, the prepared flux is added in proportion to increase the solubility of the slag, reduce the viscosity of the slag, and enhance the fluidity. It is blown into cotton under high-speed centrifugal state, which can make the mineral wool fiber thinner and the slag in the mineral wool The ball content is reduced, the tensile strength of mineral wool is improved, and the thermal conductivity of mineral wool is reduced.

[0014] The prepared mineral wool product has been tested to have a slag ball content of 6% to 8%, an average fiber size of less than 5 μm, and an acidity coefficient of 1.31, which meets ...

Embodiment 2

[0016] The flux used for making mineral wool from hot silicomanganese slag consists of fluorite and magnesium oxide powder. Mix 5% fluorite and 3% magnesia powder in hot slag according to the mass percentage to make tempering material, mix fluorite and magnesia to make flux for silicomanganese slag making mineral wool, and heat slag in the holding furnace During the heating process, the prepared flux is added in proportion to increase the solubility of the slag, reduce the viscosity of the slag, and enhance the fluidity. It is blown into cotton under high-speed centrifugal state, which can make the mineral wool fiber thinner and the slag in the mineral wool The ball content is reduced, the tensile strength of mineral wool is improved, and the thermal conductivity of mineral wool is reduced.

[0017] The prepared mineral wool product has been tested to have a slag ball content of 6% to 8%, an average fiber size of less than 5 μm, and an acidity coefficient of 1.31, which meets ...

Embodiment 3

[0019] The flux used for making mineral wool from hot silicomanganese slag consists of fluorite and magnesium oxide powder. Mix 5% fluorite and 3% magnesia powder in hot slag according to the mass percentage to make tempering material, mix fluorite and magnesia to make flux for silicomanganese slag making mineral wool, and heat slag in the holding furnace During the heating process, the prepared flux is added in proportion to increase the solubility of the slag, reduce the viscosity of the slag, and enhance the fluidity. It is blown into cotton under high-speed centrifugal state, which can make the mineral wool fiber thinner and the slag in the mineral wool The ball content is reduced, the tensile strength of mineral wool is improved, and the thermal conductivity of mineral wool is reduced.

[0020] The prepared mineral wool product has been tested to have a slag ball content of 6% to 8%, an average fiber size of less than 5 μm, and an acidity coefficient of 1.31, which meets ...

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Abstract

The invention provides a slag ball content control method for preparation of mineral wool from silicon-manganese slag and relates to improvement of a technological method for preparing mineral wool from metallurgical slag, particularly from the silicon-manganese slag. The method is characterized in that a flux is added to hot melt slag of a silicon-manganese alloy in the preparation process, wherein the flux contains calcium fluoride and magnesium oxide, adding amount of calcium fluoride is 5%-8% by weight of the hot melt slag of the silicon-manganese alloy, and the adding amount of magnesiumoxide is 3%-5% by weight of the hot melt slag of the silicon-manganese alloy. According to the method, the slag is diluted by adding the flux to the hot melt slag of the silicon-manganese alloy, flowability of the hot melt slag is enhanced, fibers can become thinner due to wool forming in a high-speed centrifugation state, content of slag balls in the mineral wool is reduced, tensile strength of the mineral wool is improved, cost is lower, and operation is facilitated; glass state of high-temperature melt of the prepared mineral wool is good, fiber forming rate is high, fiber forming quality is excellent, slag ball content is lower than 8%, heat conductivity coefficient is low, tensile strength is high, and diversified market demands can be met.

Description

technical field [0001] A method for controlling the content of slag balls prepared from silicomanganese slag to mineral wool relates to the improvement of a process for producing mineral wool from metallurgical slag, especially the process for preparing mineral wool from silicomanganese slag. Background technique [0002] Mineral wool is a light thermal insulation and energy-saving material, which has excellent thermal insulation and sound insulation performance, and also has excellent chemical stability, heat resistance and flame retardancy, so it is often made into plate, tube and granular products and sold in large quantities. It is used as thermal insulation material in petroleum, chemical industry, steel, power plant, construction and other fields. The main raw materials for the production of mineral wool are natural basalt and diabase; the second is industrial waste such as blast furnace slag, silico-manganese slag and other metallurgical slag. [0003] The convention...

Claims

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Application Information

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IPC IPC(8): C03C13/06C03C1/00C03C6/10
CPCC03C13/06C03C1/00C03C1/002
Inventor 周占红莫军红杨浩曹国峰
Owner NINGXIA JIYUAN JUNTAI NEW MATERIAL TECH CO LTD
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