Method for producing soil conditioner from iron ore tailings

A technology for soil conditioner and iron ore tailings, which is applied in the field of producing soil conditioners by using iron ore tailings, can solve the problems of limited soil improvement effect, single raw material, etc., and achieves low raw material cost, improved pH value, and saved production cost. Effect

Inactive Publication Date: 2021-02-05
王庆乐
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, in view of the above-mentioned problems, the present invention provides a method of utilizing iron ore tailings to produce a soil conditioner, which mainly solves the problem that the raw material of the soil conditioner in the prior art is single and has limited effect on soil improvement

Method used

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  • Method for producing soil conditioner from iron ore tailings
  • Method for producing soil conditioner from iron ore tailings
  • Method for producing soil conditioner from iron ore tailings

Examples

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preparation example Construction

[0029] (2) Preparation of porous viscous material: take active carbon, coal cinder and limestone as raw materials, mix them uniformly in a ratio of 1:80:19 by weight, add an agricultural adhesive, and the agricultural adhesive is carboxymethyl cellulose Sodium is made by gelatinization. During specific operation, the gelatinized sodium carboxymethylcellulose is mixed with the above mixture in three batches. After each addition of sodium carboxymethylcellulose, it should be stirred evenly to obtain porous viscous thing;

[0030] (3) Carry out drying treatment to the porous sticky matter: send the porous sticky matter obtained in step (2) into an oven for baking, the oven temperature is controlled at 100° C., and the moisture content of the porous sticky matter is controlled at 15%;

[0031] (4) Granulation: Send the porous viscous matter into a granulator for granulation. During granulation, the temperature of the granulator is controlled within 120°C, so that the pore structur...

Embodiment 2

[0035] Compared with Embodiment 1, the horizontal front end of the remixing treatment device in this embodiment is also provided with a material push rod, which is used to push and remove the porous sticky matter adhered to the tailings powder out of the storage space, so that the preparation of the soil conditioner can be sustainable. Compared with the examples, this scheme can be used to continuously prepare soil conditioners in large quantities.

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Abstract

The invention relates to the field of soil conditioners, provides a method for producing a soil conditioner from iron ore tailings, and mainly solves the problems of single raw material and limited soil improvement effect of the soil conditioner in the prior art. The method comprises the following treatment steps: (1) treatment of the iron ore tailings: collecting the iron ore tailings, and carrying out magnetic separation to obtain valuable metal fine powder and tailing powder; (2) preparation of a porous viscous material: taking activated carbon, coal cinder and limestone as raw materials, uniformly mixing according to a weight ratio of 1:(50-80):(9-20), and adding an agricultural adhesive to obtain the porous viscous material; (3) drying treatment on the porous viscous substance: feeding the porous viscous substance obtained in the step (2) into a drying oven to be baked, controlling the temperature of the drying oven to be 80-120 DEG C, and controlling the moisture of the porous viscous substance to be 10-20%; (4) granulation: feeding the porous viscous substance into a granulator for granulation to obtain a granular porous viscous substance; and (5) feeding into a mixing treatment device for online mixing.

Description

technical field [0001] The invention relates to the field of soil conditioner, in particular to a method for producing soil conditioner by utilizing iron ore tailings. Background technique [0002] Iron ore tailings are the wastes that are discharged after the iron ore is ground into fine iron ore and selected "useful components" in iron concentrators under specific economic and technical conditions. At present, the cumulative amount of iron ore tailings in my country is as high as more than one billion tons , and nearly 300 million tons of iron ore tailings are discharged every year, and the comprehensive utilization rate is less than 20%. At present, the treatment of iron ore tailings in my country is still based on dam building and stockpiling, which occupies a large amount of land and causes environmental pollution. [0003] Iron ore tailings not only contain a certain amount of iron, but also other valuable metals and minerals, such as copper, antimony, aluminum, sulfur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/42C09K17/08C05G3/00C05G3/80C09K101/00C09K109/00
CPCC05G3/00C09K17/08C09K17/42C09K2101/00C09K2109/00C05G3/80
Inventor 王庆乐
Owner 王庆乐
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