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A method of firing ceramsite with laterite-type gold dressing tailings and its product

A technology of ceramsite and gold selection, which is applied in the field of light ceramsite, can solve the problems of increasing energy consumption, air pollution, long time, generally 2-2.5 hours, etc., achieves short production time, excellent cylinder compressive strength, and can be implemented strong effect

Active Publication Date: 2018-03-09
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are following shortcomings in these methods: (1) in the patent CN102503366A, it uses rock type gold tailings as raw material to produce ceramsite, and the amount of coal powder in the ceramsite formula is about 10%, so the raw material of this ceramsite High cost
The production process of this kind of ceramsite will produce a large amount of sulfur-containing compound odorous exhaust gas, and cause air pollution, which has been complained by the surrounding residents for environmental protection
(3) In the patent document CN 103288421A, it uses the Yellow River silt sand and rock-type gold tailings as raw materials to produce ceramsite. The preparation process of ceramsite is very complicated, and problems such as repeated preheating are often introduced, which reduces the operability of the scheme sex
(4) In the patent document CN102503366A, it uses rock-type gold tailings as raw materials to produce ceramsite. Except that the amount of coal powder needs to meet 8% to 10%, the firing time of ceramsite is generally long, generally at 2-2.5 Hours; long-time high-temperature firing greatly increases energy consumption and increases production costs

Method used

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  • A method of firing ceramsite with laterite-type gold dressing tailings and its product
  • A method of firing ceramsite with laterite-type gold dressing tailings and its product
  • A method of firing ceramsite with laterite-type gold dressing tailings and its product

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Quality ratio:

[0040] Laterite type gold dressing tailings: iron tailings: coal powder = 1.000:0.500:0.0750; laterite type gold dressing tailings, iron tailings, and coal powder are all solid. The corresponding solid mixture includes the main component, SiO 2 : 53.6%, Al 2 o 3 : 14.8%, Fe 2 o 3 : 12.9%, CaO: 2.0%.

[0041] Water: Solid = 3:10. The solid corresponds to the total mass of the three solid raw materials of laterite-type gold tailings, iron tailings, and coal powder.

[0042] The manufacturing process flow includes the following steps:

[0043] (1) Pass gold tailings, iron tailings, and coal powder through a sieve with an aperture of 0.075mm;

[0044] (2) mix the laterite type gold tailings, iron tailings, and coal powder in the above-mentioned ratio;

[0045] (3) To the mixture obtained in step (2), add the water whose quality is the sum of solid mass 0.3, and fully stir, mix well;

[0046] (4) passing the solid-liquid mixture obtained in step (3...

Embodiment 2

[0050] Weight ratio:

[0051] Laterite-type gold beneficiation tailings: iron tailings: coal powder = 1.000:0.500:0.045; laterite-type gold beneficiation tailings, iron tailings, and coal powder are all solid. The corresponding solid mixture includes the main component, SiO 2 : 54.7%, Al 2 o 3 : 15.1%, Fe 2 o 3 : 13.1%, CaO: 2.0%.

[0052] Water: Solid = 3:10.

[0053] The manufacturing process flow includes the following steps:

[0054] (1) Pass gold tailings, iron tailings, and coal powder through a sieve with an aperture of 0.075mm;

[0055] (2) mix the laterite type gold tailings, iron tailings, and coal powder in the above-mentioned ratio;

[0056] (3) In the mixture obtained in step (2), add the water that quality is the sum of solid mass 0.3, and stir;

[0057] (4) The solid-liquid mixture obtained in step (3) is subjected to a pelletizing process to obtain balls with a diameter of 20 mm, and put into an oven at 100° C. for drying for 2 hours;

[0058] (5) Put...

Embodiment 3

[0061] Weight ratio:

[0062] Laterite type gold dressing tailings: iron tailings: coal powder = 1.000:0.500:0.085; laterite type gold dressing tailings, iron tailings, and coal powder are all solid. The corresponding solid mixture includes the main component, SiO 2 : 53.3%, Al 2 o 3 : 14.7%, Fe 2 o 3 : 12.8%, CaO: 2.0%.

[0063] Water: Solid = 3:10.

[0064] The manufacturing process flow includes the following steps:

[0065] (1) Pass gold tailings, iron tailings, and coal powder through a sieve with an aperture of 0.075mm;

[0066] (2) mix the laterite type gold tailings, iron tailings, and coal powder in the above-mentioned ratio;

[0067] (3) In the mixture obtained in step (2), add the water that quality is the sum of solid mass 0.3, and stir;

[0068] (4) The solid-liquid mixture obtained in step (3) is subjected to a pelletizing process to obtain balls with a diameter of 20 mm, and put into an oven at 100° C. for drying for 2 hours;

[0069] (5) Put the pelle...

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Abstract

The invention discloses a method for calcining ceramisites by using red-soil-type gold concentration tailings and a product thereof. The calcining method comprises the following steps: (1) uniformly mixing the red-soil-type gold concentration tailings, iron tailings and coal dust according to the mass ratio of 1.000:0.250-0.500:0.045-0.085, to obtain a solid mixture; (2) adding water which is 15%-30% of the mass percent of the solid mixture to the solid mixture, uniformly mixing and stirring, to obtain a solid-liquid mixture; (3) preparing a ceramsite base by using the solid-liquid mixture, and drying the ceramiste base to obtain the dried ceramiste base; and (4) calcining the dried ceramiste base for 5-20 minutes in 1050-1350 DEG C of the temperature, and cooling to obtain the ceramisites. The method is capable of improving the specific types of the key raw materials used by the calcining method. Compared with the prior art, the waste resource utilization of the red-soil-type gold concentration tailings can be realized in the ceramisites preparation.

Description

technical field [0001] The invention belongs to the field of building material production, and more specifically relates to a method for firing ceramsite with laterite-type gold tailings and its products. The method uses laterite-type gold tailings as the main raw material and adds a small amount of iron tailings And coal powder, fired to obtain lightweight ceramsite. Background technique [0002] Gold beneficiation tailings are mining waste residues produced after gold is extracted from gold mines. At present, they are mainly stockpiled and processed, which not only needs to occupy a large area of ​​land, but also causes environmental pollution. Laterite-type gold-dressing tailings, such as the gold-dressing tailings discharged by Shewushan Gold Mine Co., Ltd. in Jiayu County, Hubei Province, are different from rock-type tailings in terms of physical and chemical properties. The specific analysis is as follows. [0003] Most of the domestic gold mines are rock-type gold mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B38/06C04B33/132
CPCC04B33/132C04B38/009C04B38/068Y02P40/60
Inventor 杨湘睿胡勇杨家宽陈烨
Owner HUAZHONG UNIV OF SCI & TECH