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A kind of three-ash crushed stone base material containing dehydration filter cake and its preparation method

A dehydration filter cake and base material technology, applied in the field of three-ash gravel base material and its preparation, can solve the problems of stainless steel tailings not being fully and effectively harmless and resource utilization, and achieve good environmental benefits, easy Operation, the effect of reducing production cost

Active Publication Date: 2015-11-04
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the particularity of stainless steel tailings, the domestic use of stainless steel tailings has been relatively simple. The valuable metals in stainless steel tailings are simply piled up after recovery, and the stainless steel tailings have not been fully and effectively harmless and resource-efficient. utilization

Method used

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  • A kind of three-ash crushed stone base material containing dehydration filter cake and its preparation method
  • A kind of three-ash crushed stone base material containing dehydration filter cake and its preparation method
  • A kind of three-ash crushed stone base material containing dehydration filter cake and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The mix consists of the following raw materials:

[0033] Lime 5wt%;

[0034] Fly ash 10wt%;

[0035] Dehydrated filter cake 5wt%;

[0036] Crushed stone 80wt%;

[0037] After weighing the raw materials according to the above ratio, add water to the mixed material, and stir and mix evenly to obtain the roadbed material, wherein: the amount of water added is 4.9% of the total weight of the mixed material.

Embodiment 2

[0039] The mix consists of the following raw materials:

[0040] Lime 5wt%;

[0041] Fly ash 7.5wt%;

[0042] Dehydrated filter cake 7.5wt%;

[0043] Crushed stone 80wt%;

[0044] After weighing the raw materials according to the above ratio, add water to the mixture, and stir and mix evenly to obtain the roadbed material, wherein: the amount of water added is 4.8% of the total weight of the mixture.

Embodiment 3

[0046] The mix consists of the following raw materials:

[0047] Lime 4wt%;

[0048] Fly ash 8wt%;

[0049] Dehydrated filter cake 8wt%;

[0050] Crushed stone 80wt%;

[0051] After weighing the raw materials according to the above ratio, add water to the mixed material, and stir and mix evenly to obtain the roadbed material, wherein: the amount of water added is 4.6% of the total weight of the mixed material.

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Abstract

The invention belongs to the field of road construction materials, and particularly relates to a lime-flyash-cement macadam base course material containing a dewatering filter cake and a preparation method thereof, wherein the dewatering filter cake is produced during a stainless steel tailings processing process, and the lime-flyash-cement macadam base course material contains the following raw materials, by weight: 3-7% of lime, 7-12% of fly ash, 4-10% of dewatering filter cake, and 75-85% of macadam. The preparation method comprises: weighing lime, fly ash, dewatering filter cake and macadam according to a certain ratio; and adding water to the mixing material, and uniformly stirring, wherein the weight of the water is 4-5% of the total weight of the mixing material. According to the present invention, the treatment problem of the dewatering filter cake produced during the stainless steel tailings processing process is solved, the dewatering filter cake is used as the raw material for the lime-flyash-cement substrate so as to reduce fly ash consumption, increase economic benefits of enterprises, and provide good environmental benefits, and the lime-flyash-cement macadam base course material completely meet requirements through performance testing.

Description

technical field [0001] The invention belongs to the field of road building materials, and in particular relates to a three-ash crushed stone base material containing dewatered filter cake produced in the process of processing stainless steel tailings and a preparation method thereof. Background technique [0002] Steel slag is the solid waste slag produced in the steelmaking process. The stainless steel tailing slag mainly includes EAF slag and AOD slag, which come from the EAF furnace and AOD furnace in the stainless steel smelting process respectively. During the treatment of stainless steel tailings, a certain amount of dewatered filter cake will be produced. In 2011, the production of stainless steel in my country reached 12.5 million tons. According to the estimation of 0.25 tons of stainless steel tailings per ton of steel, the stainless steel tailings have reached 3.1 million tons. As the production of stainless steel increases year by year, the amount of stainless s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08
Inventor 顾文飞周维朱柏龙朱唐亮韩伟徐兵
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS