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Formula for preparing alkaline soil improvement agent through coal gangue and preparation method of alkaline soil improvement agent

A technology of soil improver and coal gangue, which is applied in the direction of soil conditioning materials, chemical instruments and methods, applications, etc., can solve problems such as unsuitable power generation, low calorific value of coal gangue, and influence on normal operation of coal mines, so as to increase water retention and Air permeability, improvement of soil structure, environmental protection effect of the preparation process

Inactive Publication Date: 2019-06-25
珠海三豫环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional treatment methods of coal gangue are used to make bricks, generate electricity or build roads, and the calorific value of coal gangue in some areas is relatively low, which is not suitable for power generation, such as: Sichuan. Therefore, the problem of coal gangue has seriously affected the Normal operation of coal mine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A formula for preparing an alkaline soil conditioner by using coal gangue, which includes the following components by weight: 20 parts by weight of coal gangue, 15 parts by limestone or phosphogypsum, and 1 part by weight Preferably, 0.84 parts of sulfur. In this embodiment, the auxiliary agent is an alkali metal oxide active alkali metal salt, wherein the alkali metal oxide is one or more of magnesium oxide, calcium oxide, sodium oxide, and potassium oxide. The alkali metal salt is one or more of magnesium carbonate, calcium carbonate, sodium carbonate, and potassium carbonate.

[0034] A kind of preparation method utilizing coal gangue to prepare alkaline soil conditioner, it comprises the following steps:

[0035] S1: Raw material testing, chemical composition and phase analysis of coal gangue raw materials, limestone or phosphogypsum raw materials, to obtain the chemical composition and content of coal gangue, limestone or phosphogypsum;

[0036] S2: Raw material c...

Embodiment 2

[0046] A formula for preparing an alkaline soil conditioner by using coal gangue, which includes the following components by weight: 20 parts by weight of coal gangue, 20 parts by limestone or phosphogypsum, and 2 parts by weight , 1.68 parts of sulfur. In the present embodiment, the auxiliary agent is an alkali metal oxide active alkali metal salt, wherein the alkali metal oxide is one or more of magnesium oxide, calcium oxide, sodium oxide, and potassium oxide. The salt is one or more of magnesium carbonate, calcium carbonate, sodium carbonate, and potassium carbonate.

[0047] A kind of preparation method utilizing coal gangue to prepare alkaline soil conditioner, it comprises the following steps:

[0048] S1: Raw material testing, chemical composition and phase analysis of coal gangue raw materials, limestone or phosphogypsum raw materials, to obtain the chemical composition and content of coal gangue, limestone or phosphogypsum;

[0049] S2: Raw material crushing, the ra...

Embodiment 3

[0059] A formula for preparing an alkaline soil conditioner from coal gangue, which includes the following components in parts by weight: 20 parts of coal gangue, 18 parts of limestone or phosphogypsum, 1.5 parts of additives, and 1.26 parts of sulfur. In this embodiment , the auxiliary agent is an alkali metal oxide active alkali metal salt, wherein the alkali metal oxide is one or more of magnesium oxide, calcium oxide, sodium oxide, and potassium oxide, and the alkali metal salt is magnesium carbonate, calcium carbonate, carbonic acid One or more of sodium and potassium carbonate.

[0060] A kind of preparation method utilizing coal gangue to prepare alkaline soil conditioner, it comprises the following steps:

[0061] S1: Raw material testing, chemical composition and phase analysis of coal gangue raw materials, limestone or phosphogypsum raw materials, to obtain the chemical composition and content of coal gangue, limestone or phosphogypsum;

[0062] S2: Raw material cru...

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Abstract

The invention discloses a formula for preparing an alkaline soil improvement agent through coal gangue. The alkaline soil improvement agent is prepared from the following components in parts by weight: 20 parts of the coal gangue, 15-20 parts of limestone or ardealite, 1-2 parts of an additive, and 0.84-1.68 parts of sulphur. The invention further discloses a method for preparing the alkaline soilimprovement agent through the coal gangue, and the method includes the following steps of S1, raw material testing, S2, raw material crushing, S3, burdening, S4, mixing, S5, forming, S6, thermal activation, S7, quenching, S8, drying, S9, crushing, and S10, post-mixing. According to the alkaline soil improvement agent, coal gangue waste is turned into treasure, mesoporous and micropores are formedin powder under the action of the high temperature, the soil structure is improved, and the water retention property and breathability of soil are improved; and the sulphur is converted into sulfuricacid under the biological catalysis action in the soil, the sulfuric acid reacts with alkaline substances in the soil, thus the alkaline soil is neutralized, and the ecosystem of the soil is repaired.

Description

technical field [0001] The invention relates to the technical field of preparing an alkaline soil improver from coal gangue, in particular to a formula for preparing an alkaline soil improver from coal gangue and a preparation method thereof. Background technique [0002] Coal gangue is a solid industrial waste produced during coal mining and processing, which contains a variety of mineral components. Among them, the content of kaolin and quartz accounts for more than 50%, and may also contain illite, chlorite, muscovite, feldspar, pyrite, siderite, hematite, calcite and other crystal phase minerals. Among them, kaolinite, illite, chlorite, muscovite, and feldspar belong to aluminous clay minerals, all of which have good adsorption properties. The main chemical components of coal gangue include AL2O3, SiO2, CaO, MgO, Fe2O3, K2O and Na2O. The contents of these chemical components fluctuate greatly depending on the geological age and region of the coal seam. [0003] Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/02C09K101/00
Inventor 董海锋周建民毛锋李彦平
Owner 珠海三豫环保新材料科技有限公司
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