Conditioning material for preparation of mineral wool from thermal blast furnace slag and preparation method thereof

A technology of blast furnace slag and tempering material, which is applied in the field of mineral wool production, can solve the problems of general tempering effect, poor tempering effect, and limited research, and achieve recyclable utilization, significant tempering effect, and acidity coefficient adjustable effect

Inactive Publication Date: 2015-04-08
宝钢矿棉科技(宁波)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of producing mineral wool from hot blast furnace slag, it is necessary to add a certain amount of tempering material to the hot blast furnace slag (1400-1600°C) to improve its physical and chemical properties (the conditioning material accounts for 10-20% of the mass of mineral wool) , so that the high-temperature melt meets the quality requirements of mineral wool preparation. At present, the research in this area is limited. The existing conditioning materials are usually

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A kind of tempering material for making mineral wool from hot state blast furnace slag, the mass percentage of raw material composition of this hot state blast furnace slag making mineral wool is: nepheline is 50%, fly ash is 30%, Cr 2 o 3 5%, NaNO 3 15%.

[0029] Cr 2 o 3 The particle size is 200-250 mesh. Nepheline, fly ash and NaNO 3 The particle size is 40-60 mesh.

[0030] Described fly ash, it contains the following components by mass percentage: SiO 2 46-48%, Al 2 o 3 27-28%, TiO 2 1-1.5%, FeO 5-6%, CaO 4-4.5%, MgO 0.5-1%, K 2 O is 1-1.5%, Na 2 O is 0.3-0.6%, MnO is 0.01-0.1%, P 2 o 3 0.1-0.5%, SO 3 1-1.5%.

[0031] Described nepheline, it contains the following components by mass percentage: SiO 2 42-43%, Al 2 o 3 28-30%, Fe 2 o 3 3-3.5%, CaO 2-2.5%, K 2 O+Na 2 O is 17-19%, P 2 o 3 0.2-0.3%.

[0032] A method for preparing a tempering material for producing mineral wool from hot blast furnace slag, comprising the following ...

Embodiment 2

[0038] Embodiment 2: A kind of tempering material for making mineral wool from hot state blast furnace slag, the mass percentage of raw material composition of this hot state blast furnace slag making mineral wool is: nepheline is 42%, fly ash is 35%, Cr 2 o 3 6%, NaNO 3 17%. Cr 2 o 3 The particle size is 230-260 mesh. Nepheline, fly ash and NaNO 3 The particle size is 50-70 mesh.

[0039] Described fly ash, it contains the following components by mass percentage: SiO 2 46-48%, Al 2 o 3 27-28%, TiO 2 1-1.5%, FeO 5-6%, CaO 4-4.5%, MgO 0.5-1%, K 2 O is 1-1.5%, Na 2 O is 0.3-0.6%, MnO is 0.01-0.1%, P 2 o 3 0.1-0.5%, SO 3 1-1.5%.

[0040] Described nepheline, it contains the following components by mass percentage: SiO 2 42-43%, Al 2 o 3 28-30%, Fe 2 o 3 3-3.5%, CaO 2-2.5%, K 2 O+Na 2 O is 17-19%, P 2 o 3 0.2-0.3%.

[0041] A method for preparing a tempering material for producing mineral wool from hot blast furnace slag, comprising the following steps in ...

Embodiment 3

[0047] Embodiment 3: A kind of tempering material for mineral wool production from hot state blast furnace slag, the mass percentage of raw material composition of this hot state blast furnace slag production mineral wool is: nepheline is 60%, fly ash is 18%, Cr 2 o 3 4%, NaNO 3 18%. Cr 2 o 3 The particle size is 240-270 mesh. Nepheline, fly ash and NaNO 3 The particle size is 60-80 mesh.

[0048] Described fly ash, it contains the following components by mass percentage: SiO 2 46-48%, Al 2 o 3 27-28%, TiO 2 1-1.5%, FeO 5-6%, CaO 4-4.5%, MgO 0.5-1%, K 2 O is 1-1.5%, Na 2 O is 0.3-0.6%, MnO is 0.01-0.1%, P 2 o 3 0.1-0.5%, SO 3 1-1.5%.

[0049] Described nepheline, it contains the following components by mass percentage: SiO 2 42-43%, Al 2 o 3 28-30%, Fe 2 o 3 3-3.5%, CaO 2-2.5%, K 2 O+Na 2 O is 17-19%, P 2 o 3 0.2-0.3%.

[0050] A method for preparing a tempering material for producing mineral wool from hot blast furnace slag, comprising the following s...

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PUM

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Abstract

The invention discloses a conditioning material for preparation of mineral wool from thermal blast furnace slag and a preparation method thereof. The conditioning material for preparation of mineral wool from thermal blast furnace slag is composed of the following raw materials by mass: 30-80% of nepheline, 5-40% of fly ash, 2-10% of Cr2O3, and 5-20% of NaNO3. The preparation method of the conditioning material for preparation of mineral wool from thermal blast furnace slag sequentially includes the steps of: (1) weighing nepheline and fly ash according to mass percentage, and fully mixing them to obtain a mixture A; then weighing Cr2O3 and NaNO3 according to mass percentage, and fully mixing them to obtain a mixture B; and (2) weighing the mixture A and mixture B according to mass percentage, and fully mixing them to obtain the conditioning material for preparation of mineral wool from thermal blast furnace slag. The conditioning material provided by the invention has the advantages of low cost, easily available raw materials and easy processing, and significant conditioning effect. The prepared granulated wool has the characteristics of good high temperature melt glassy state, high fiber forming rate, good quality of formed fiber, and adjustable acidity coefficient.

Description

technical field [0001] The invention relates to the technical field of mineral wool production, in particular to a tempering material for producing mineral wool from hot blast furnace slag and a preparation method thereof. Background technique [0002] With the rapid development of the global economy, the problem of energy shortage is becoming more and more serious, and the technology of energy saving and emission reduction has become a research hotspot all over the world. At present, my country's energy situation is severe, and the product energy consumption index is too high. The energy consumption per unit of the main energy-consuming products is 25-90% higher than that of developed countries (the weighted average is about 40% higher); secondly, the energy consumption of the output value is high. Energy consumption is one of the highest in the world. For example, for every kilogram of oil equivalent of energy, Japanese companies can create an average output value of 10.2 U...

Claims

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Application Information

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IPC IPC(8): C03C13/06C03C1/00
Inventor 朱春江李胜春陈铁军王品益高晓骏沈健
Owner 宝钢矿棉科技(宁波)有限公司
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