A kind of composite tailings cementitious material and its preparation method and application

A technology of cementitious materials and tailings, which is applied in the field of composite tailings cementitious materials and its preparation, can solve the problems of difficult mining and selection, high production costs, and few rich ores, and achieve low prices, low equipment requirements, and preparation methods simple effect

Active Publication Date: 2022-02-08
HEBEI UNIV OF ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the remaining unutilized reserves, there are many lean ores, few rich ores, many small and medium-sized mines, and few large-scale mines, which are difficult to mine and process and high in production costs.

Method used

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  • A kind of composite tailings cementitious material and its preparation method and application
  • A kind of composite tailings cementitious material and its preparation method and application

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Experimental program
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Effect test

preparation example Construction

[0035] The present invention also includes a method of preparing the composite tail desear gelling material, the preparation method comprising the steps of:

[0036] Step 1, use the jaw crusher to break the copper slag to <2 mm, dry, then powder to <0.08 mm by the ball mill; the agglomerate refiner is dried, and the ball mill is powdered to <0.08 mm, then placed in 300 ~ 500 ° C high temperature calcination 1 to 3 hours, naturally cooled; after desulfurization ash slag, pollen to <0.08 mm was dried with a vibrating ball mill; after discarding stone powder was dried with a ball mill powder to <0.08 mm; the drying temperature is 80 ~ 110 ° C, drying to a water content of less than 0.1%; the powder mill is SMφ500 mm × 500 mm type cement grinding.

[0037] Step 2, select the material and steel slag and cyanide residue obtained in step 1 (400 to 800m specific surface area) 2 / kg), raw lime, naoh, na 2 SiO 3 Based on proportion, then placed in a vibrating mixer, stir well, and finally ob...

Embodiment 1

[0040] A composite degeneration gelling material consists of various substances of the following mass:

[0041] Steel slag and cyanide residue selection iron waste 80, aerated concrete waste 10, copper residue 10, raw lime 10, desulfurization ash 6, NaOH1, NA 2 SiO 3 0.75, abandoned stone powder 0.5.

[0042] The preparation method of the above composite tail slag gelling material includes the following steps:

[0043] The copper slag was broken to <2 mm, dried, and then powdered with a ball mill powder to dry with a ball mill. The agglomerate gas was dried, and the ball mill was powdered to <0.08 mm, then placed at 300 ° C high temperature calcination. 1H, and naturally cooled; after desulfurization ash slag, grinds to <0.08 mm by the vibrating ball mill; after the abandonment stone is dried, the ball mill is powdered with the ball mill; the drying temperature is 80 ° C, dried to aqueous water The rate is less than 0.1%; the powder mill is SMφ500mm × 500 mm cement grinding.

[00...

Embodiment 2

[0047] A composite degeneration gelling material consists of various substances of the following mass:

[0048] Steel slag and cyanide residue selection iron waste 70, aerated concrete waste 20, copper residue 10, raw lime 12, desulfurization ash, NaOH1.5, NA 2 SiO 3 1. Waste stone powder 0.5.

[0049] The preparation method of the above composite tail slag gelling material includes the following steps:

[0050] The copper slag was broken to <2 mm, dried, and then powdered with a ball mill to dry with a ball mill. The aggressive refiner was dried, and the ball mill was powdered to <0.08 mm, then placed in a high temperature calcination of 500 ° C. 2H, and naturally cooled; after desulfurization ash slag, grinds to <0.08 mm; after the dry stone is dried, the grinding machine is grinded to <0.08 mm; the drying temperature is 80 ° C, dried to aqueous water The rate is less than 0.1%; the powder mill is SMφ500mm × 500 mm cement grinding.

[0051] Select the above materials and steel s...

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Abstract

The invention proposes a composite tailings cementitious material and its preparation method and application. The composite tailings cementitious material is composed of steel slag and cyanide slag, iron selection waste, copper slag, aerated concrete waste, quicklime, desulfurization ash, NaOH, Na 2 SiO 3 It is prepared from waste stone powder. The preparation method is to crush, dry and grind copper slag; dry and grind aerated concrete waste, then calcinate and cool at high temperature; dry and grind desulfurized ash; dry and grind waste stone powder; Separation of iron waste, quicklime, NaOH, Na with steel slag and cyanide slag 2 SiO 3 Mix in proportion, and then place in a vibrating mixer and stir evenly to obtain a composite tailings cementitious material. The invention can effectively utilize steel slag and cyanide slag to select iron waste, aerated concrete waste and copper slag, realize turning waste into wealth, greatly reduce environmental pollution, and realize significant economic and social benefits.

Description

Technical field [0001] The present invention relates to the technical field of building materials, in particular, it relates to a composite tail slag cement and a preparation method and application. Background technique [0002] Cyanide residue remaining after the slag and the slag is selected from the scrap iron and slag in weak magnetic iron cyanide tailings. The grinding sludge has been to 400 ~ 800m 2 / Kg, it is the re-use of solid waste and achieve sustainable development of the green. [0003] Copper smelting copper slag is slag. Copper smelting slag containing large amounts of copper in addition, also contains a variety of valuable metals Fe, Zn, Pb, Co, Ni, etc., and small amounts of noble metals Au, Ag and the like. Our country has accumulated about 190 million tons, most of stockpiling residue field. The remaining untapped reserves, the lean ore, less high-grade ore, small and medium sized mines, less large-scale mining, mining difficult, high production costs. Cement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/24C04B7/21C04B7/19C04B7/38
CPCC04B7/246C04B7/24C04B7/21C04B7/19C04B7/38Y02P40/10
Inventor 王长龙张凯帆高颖李军尹艺臻叶鹏飞霍泽坤赵高飞任真王绍熙
Owner HEBEI UNIV OF ENG
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