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Method for producing mineral wool fiber by using high-temperature liquid waste slags of metallurgical furnace as raw material

A technology of mineral wool fiber and waste residue, which is applied in the field of resource regeneration and utilization, can solve problems such as melting waste, and achieve the effects of reducing energy consumption and production cost, superior acid resistance and good waterproof performance.

Inactive Publication Date: 2015-04-22
江西自立环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Originally released from the blast furnace, it was in a high-temperature molten state. After cooling, crushing and screening, it became the raw material of the slag fiber cupola. Therefore, the blast furnace slag has been melted for the second time in the slag fiber cupola. Generally, 1 ton of blast furnace slag contains about 1675MJ of sensible heat, which is roughly equivalent to the heat released when 57kg of standard coal is burned. It can be seen that the sensible heat of melting when molten blast furnace slag flows out of the blast furnace is wasted

Method used

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  • Method for producing mineral wool fiber by using high-temperature liquid waste slags of metallurgical furnace as raw material
  • Method for producing mineral wool fiber by using high-temperature liquid waste slags of metallurgical furnace as raw material
  • Method for producing mineral wool fiber by using high-temperature liquid waste slags of metallurgical furnace as raw material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Follow the process flow. The chemical composition of copper, lead, zinc, nickel, tin, iron and other high-temperature liquid waste slag and conditioner in a factory is shown in Table 1.

[0037] Step 1: Release high-temperature liquid waste slag from metallurgical furnaces such as copper, lead, zinc, nickel, tin, and iron in Table 1, and flow it into an electric heat preservation furnace for heat preservation. The temperature is controlled at 1400-1500 °C. After heat preservation in the electric furnace, the temperature can be controlled and the hot slag can be released evenly.

[0038] Step 2: Adjust the acidity coefficient with alkaline conditioner. In the electric furnace, the conditioner 1 is added into the electric furnace according to a certain proportion and melted. Adjust its chemical composition, temperature, and viscosity to the range required by the slag wool fiber melt, that is, the melt acidity coefficient Mk Reach 1.1~1.8 (acidity coefficient=(SiO 2 +A...

Embodiment 2

[0051] Follow the process flow. The chemical composition of waste slag and conditioning agent of a factory is shown in Table 2.

[0052]

[0053] Step 1: Release high-temperature liquid waste slag from metallurgical furnaces such as copper, lead, zinc, nickel, tin, and iron in Table 1, and flow it into an electric heat preservation furnace for heat preservation. The temperature is controlled at 1400-1500 °C. After heat preservation in the electric furnace, the temperature can be controlled and the hot slag can be released evenly.

[0054] Step 2: Adjust the acidity coefficient with alkaline conditioner. In the electric furnace, the conditioner 1 is added into the electric furnace according to a certain proportion and melted. Adjust its chemical composition, temperature, and viscosity to the range required by the slag wool fiber melt, that is, the melt acidity coefficient M k Reach 1.1~1.8 (acidity coefficient=(SiO 2 +Al 2 o 3 ) / (CaO+MgO). Control the temperature a...

Embodiment 3

[0067] Follow the process flow. The chemical composition of waste slag from a fuming furnace in a factory is shown in Table 3.

[0068]

[0069] Step 1: Release high-temperature liquid waste slag from metallurgical furnaces such as copper, lead, zinc, nickel, tin, and iron in Table 1, and flow it into an electric heat preservation furnace for heat preservation. The temperature is controlled at 1400-1500 °C. After heat preservation in the electric furnace, the temperature can be controlled and the hot slag can be released evenly.

[0070] Step 2: Adjust the acidity coefficient with alkaline conditioner. In the electric furnace, the conditioner 1 is added into the electric furnace according to a certain proportion and melted. Adjust its chemical composition, temperature, and viscosity to the range required by the slag wool fiber melt, that is, the melt acidity coefficient M k Reach 1.1~1.8 (acidity coefficient=(SiO 2 +Al 2 o 3 ) / (CaO+MgO). Control the temperature at...

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Abstract

The invention provides a method for producing a mineral wool fiber by using high-temperature liquid waste slags of a metallurgical furnace as a raw material. The method is characterized by comprising the following steps: discharging the high-temperature liquid waste slags of the metallurgical furnace, allowing the waste slags to flow into a heat insulting electric furnace and keeping the temperature; melting the slags to generate fibers; melting a hardening and tempering agent; drawing and blowing the fibers by using a high-voltage fan; and blowing the generated mineral wool into a wool collecting chamber. The method is simple and convenient to operate; the fiber filaments are smaller than 7 micrometers in diameter, long and good in toughness; sensible heat in the raw material is fully utilized; comprehensive utilization of different industrial waste materials such as copper, lead, zinc, nickel, tin and high-temperature liquid waste slags are realized; the prepared mineral wool fiber is better than rock wool and mineral wool produced by other methods in acid resistance and waterproofness, excellent in technical performance, wide in application and applicable to preparing excellent environment-friendly energy-saving heat-insulating materials; the method disclosed by the invention is relatively low in investment cost, reliable in technology, low in resource consumption, environment-friendly and clean in production and obvious in economic benefits.

Description

technical field [0001] The invention belongs to the technical field of resource regeneration and utilization, and relates to a method for producing mineral wool fiber (insulation cotton) by using high-temperature liquid waste slag of copper, lead, zinc, nickel, tin, and iron metallurgical furnaces as raw materials. Background technique [0002] Mineral wool is a general term for inorganic fibers and their products. It includes rock wool, slag wool, glass wool, aluminum silicate wool and its products, etc.; mineral wool and its products, as a high-quality, high-efficiency thermal insulation material, have developed rapidly in my country since the 20s of the last century, and have now formed An industrial system with about 10 billion assets, its products have been applied to the industry. Insulation, heat insulation, cold preservation, fire protection, etc. in various fields of construction, transportation, shipbuilding and other industries; in recent years, although some ente...

Claims

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Application Information

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IPC IPC(8): C03B37/005
CPCC03B37/005
Inventor 叶标许国洪路永锁
Owner 江西自立环保科技有限公司
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