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High-aluminum insulating refractory raw material with titanium-iron slag as main material and preparation method thereof

A technology for refractory raw materials and ferrotitanium slag, which is used in clay products, ceramic products, other household appliances, etc., can solve the problem of reducing the strength and slag erosion resistance of high-aluminum raw materials, difficult to control bubble stability, and reducing the strength of high-aluminum raw materials, etc. problems, to achieve the effect of saving labor resources, enhancing strength and slag corrosion resistance, and low production costs

Inactive Publication Date: 2017-06-30
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of the foaming method are as follows: first, the process is more complicated, especially the stability of the bubbles is difficult to control; second, the introduction of the foaming agent is easy to introduce new impurities, which reduces the strength and slag erosion resistance of high-alumina raw materials
However, the pores formed by the burn-off method are closely related to the size of the burn-off, and the size is relatively large, which seriously reduces the strength of high-alumina raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-alumina heat-insulating refractory raw material with ferro-titanium slag as the main material and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0029] Step 1: Crush the ferro-titanium slag to 1~2mm, put it in water, soak it at 90~95°C for 1~2 hours, filter and separate it; then dry it at 110~120°C for 3~5 hours, sieve it, and take The material is sieved to obtain the treated ferro-titanium slag particles; the aperture of the sieve is 1mm.

[0030] Step 2, process the ferro-titanium slag particles as described: the mass ratio of the hydrochloric acid solution is 1: (2 ~ 2.4), add the hydrochloric acid solution that the concentration is 2 ~ 3mol / L in the ferro-titanium slag particles, stir 0.5 to 1 hour; then washed with water and filtered 2 to 3 times successively to obtain the precursor ferrotitanium slag particles.

[0031] Step 3: adding water accounting for 10-12wt% of the precursor ferrotitani...

Embodiment 2

[0036] A high-alumina heat-insulating refractory raw material with ferro-titanium slag as the main material and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0037] Step 1: Crush the ferro-titanium slag to 1~2mm, put it in water, soak it at 90~95°C for 1~2 hours, filter and separate it; then dry it at 110~120°C for 3~5 hours, sieve it, and take The material is sieved to obtain the treated ferro-titanium slag particles; the aperture of the sieve is 1mm.

[0038] Step 2, process the ferrotitanium slag particles as described: the mass ratio of the hydrochloric acid solution is 1: (2.2~2.6), add the hydrochloric acid solution that concentration is 2~3mol / L in the described treatment ferrotitanium slag particles, stir 0.5 to 1 hour; then washed with water and filtered 2 to 3 times successively to obtain the precursor ferrotitanium slag particles.

[0039] Step 3: adding water accounting for 11-13wt% of the precursor...

Embodiment 3

[0044] A high-alumina heat-insulating refractory raw material with ferro-titanium slag as the main material and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0045]Step 1: Crush the ferro-titanium slag to 1~2mm, put it in water, soak it at 90~95°C for 1~2 hours, filter and separate it; then dry it at 110~120°C for 3~5 hours, sieve it, and take The material is sieved to obtain the treated ferro-titanium slag particles; the aperture of the sieve is 1mm.

[0046] Step 2, process the ferrotitanium slag particles as described: the mass ratio of the hydrochloric acid solution is 1: (2.4~2.8), add the hydrochloric acid solution that concentration is 2~3mol / L in the described treatment ferrotitanium slag particles, stir 0.5 to 1 hour; then washed with water and filtered 2 to 3 times successively to obtain the precursor ferrotitanium slag particles.

[0047] Step 3: adding water accounting for 12-14wt% of the precursor ...

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Abstract

The invention relates to a high-aluminum insulating refractory raw material with titanium-iron slag as a main material and a preparation method thereof. The preparation method comprises the following steps: immersing crushed titanium-iron slag in water of 90-95 DEG C for 1-2 h, filtering, drying, and screening; adding a hydrochloric acid solution into the screened titanium-iron slag particles, stirring, washing and carrying out suction filtration, and wet-grinding to obtain wet-ground titanium-iron slag powder; adding the wet-ground titanium-iron slag powder and aluminum powder into a mixer, and mixing to obtain a mixture; Adding a phosphoric acid solution into the mixture, uniformly mixing, vibrating for moulding, and maintaining; finally placing the product into a muffle furnace, heating to 1355-1420 DEG C at the heating rate of 3-5 DEG C / min, carrying out thermal insulation, cooling with the furnace to room temperature, and crushing to obtain the high-aluminum insulating refractory raw material with titanium-iron slag as the main material. The method of the invention has characteristics of simple process, low production cost and no special requirements on equipment. The prepared high-aluminum insulating refractory raw material with titanium-iron slag as the main material has small heat conductivity coefficient, high cylinder compressive strength and good resistance to corrosion of slag.

Description

technical field [0001] The invention belongs to the technical field of high-alumina heat-insulating refractory raw materials. Specifically, it relates to a high-aluminum heat-insulating refractory raw material with ferro-titanium slag as the main material and a preparation method thereof. Background technique [0002] Ferro-titanium slag is the by-product of slag derived from the smelting of ferro-titanium alloy, the main chemical composition is Al 2 o 3 、TiO 2 and CaO, which can be used to prepare high-alumina raw materials, such as the patented technology of "Regenerated high-alumina refractory raw materials with ferro-titanium slag as the main material and its preparation method" (201410161089.X), using ferro-titanium slag as the main raw material to prepare regenerated high-alumina refractory materials Raw materials, the process is simple, which reduces the production cost of high-alumina refractory raw materials, but the high-alumina refractory raw materials prepared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B33/138C04B38/00
CPCC04B33/138C04B35/66C04B38/0022C04B2235/9607C04B2235/9669Y02P40/60
Inventor 张寒赵惠忠赵鹏达李静捷余俊
Owner WUHAN UNIV OF SCI & TECH
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