Boron tailings planting soil and preparation method thereof

A technology of tailings and boron mud, applied in the directions of botanical equipment and methods, clay products, planting substrates, etc., can solve problems such as environmental pollution, reduce the occupation of land resources and pollute the environment, improve the utilization rate, reduce alkali return and The effect of the burst problem

Active Publication Date: 2018-11-02
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to provide a boron tailings planting soil and its preparation method, solve the problem of environmental pollution caused by boron mud stockpiling, reduce the impact of seabed silt on marine organisms and the marine environment, and at the same time improve the quality of boron mud tailings planting soil Conforms to national standards and can be widely used in land reclamation projects in abandoned mines to reduce or avoid secondary damage to ecology caused by taking soil from different places

Method used

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  • Boron tailings planting soil and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] (1) Configure the boron mud into a slurry with a solid-to-liquid ratio of 6:1, and feed it into the slurry with a flow rate of 3.2m 3 / h sulfur-containing flue gas. After fully reacting, the slurry is subjected to solid-liquid separation to obtain the filtrate and filter residue. The filtrate is evaporated and crystallized by waste heat of the flue gas, crushed by a cone crusher, and ground by a rod mill to make a particle size of 0.1 mm boron magnesium fertilizer;

[0030] (2) Feed the dealkalized boron mud, feldspar tailings, gold tailings, and coal series kaolin into the ball mill for grinding according to the mass ratio of 62:15:15:8, and obtain a mixture of -200 mesh accounting for 95% Tailings powder, then mix the mixed tailings powder: polymethyl methacrylate and povidone according to the mass ratio of 90:5:5, and then granulate it through a tooth-stirring granulator to obtain particles smaller than 2mm. The particles were fired at a high temperature of 1100°C i...

Embodiment 2

[0035] (1) Boron mud is configured into a slurry with a solid-to-liquid ratio of 6.3:1, and a flow rate of 3.4 m is passed into the slurry 3 / h sulfur-containing flue gas. After fully reacting, the slurry is subjected to solid-liquid separation to obtain the filtrate and filter residue. The filtrate is evaporated and crystallized by waste heat of the flue gas, crushed by a cone crusher, and ground by a rod mill to make a particle size of 0.5 mm boron magnesium fertilizer;

[0036] (2) Feed dealkalized boron mud, feldspar tailings, gold tailings, and coal-based kaolin into a ball mill for grinding in a mass ratio of 65:13:15:7 to obtain a mixture of -200 mesh accounting for 95% Tailings powder, then mix the mixed tailings powder: polymethyl methacrylate and povidone according to the mass ratio of 95:2:3, and then granulate it through a tooth-stirring granulator to obtain particles smaller than 2mm. The particles were fired at a high temperature of 1100°C in a waterfall rotary ...

Embodiment 3

[0041] (1) Boron mud is configured into a slurry with a solid-to-liquid ratio of 6.5:1, and a flow rate of 3.5 m is introduced into the slurry 3 / h sulfur-containing flue gas. After fully reacting, the slurry is subjected to solid-liquid separation to obtain the filtrate and filter residue. The filtrate is evaporated and crystallized by waste heat of the flue gas, crushed by a cone crusher, and ground by a rod mill to make a particle size of 1mm. boron magnesium fertilizer;

[0042] (2) Feed dealkalized boron mud, feldspar tailings, gold tailings, and coal series kaolin into the ball mill for grinding at a mass ratio of 70:13:10:7 to obtain a mixture of -200 mesh accounting for 95% Tailings powder, then mix the mixed tailings powder: polymethyl methacrylate and povidone according to the mass ratio of 92:3:5, and then granulate through a tooth-stirring granulator to obtain particles smaller than 2mm. The particles were fired at a high temperature of 1100°C in a waterfall rotar...

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Abstract

The invention provides boron tailings planting soil, which is mainly prepared from the following raw materials in parts by mass: 60-80 parts of seabed sludge, 30-40 parts of industrial residues, 25-35parts of de-alkalized boron mud ceramsite sand, 3-5 parts of boron-magnesium fertilizer and 6-8 parts of compound fertilizer. The boron tailings planting soil enables the performance of a ceramsite sand product prepared by using boron mud to be more stable, and avoids or reduces the problem that the free magnesium oxide causes the alkali returning and bursting to the ceramsite product. Furthermore, when being used for planting soil, the prepared de-alkalized boron mud ceramsite can be used as a carrier material due to the unique microporous structure, and water and trace elements such as nitrogen, phosphorus and potassium are slowly released, so that the utilization rate of water and fertilizer is increased. In addition, wastes such as feldspar tailings, gold tailings, coal series kaolinite, the industrial residues and the seabed sludge are widely used in abandoned mine land reclamation projects, so that the problems of land resource occupation and environmental pollution are reduced,and the effective utilization ways of resources are improved.

Description

technical field [0001] The invention relates to the field of solid waste utilization and environmental protection, in particular to boron tailings planting soil and a preparation method thereof. Background technique [0002] Boron mud is the solid waste discharged from boride production enterprises after extracting borax and other boron products. It contains alkaline substances such as magnesium oxide, calcium oxide, and sodium oxide, which will have a serious impact on the surrounding environment. On the other hand, due to the It contains a large amount of valuable elements such as magnesium, and has great development and utilization value. The comprehensive utilization of boron mud is of great significance to reduce environmental pollution, improve economic benefits, save resources and promote resource regeneration. [0003] Submarine silt is formed by mixing colloidal substances, organic substances and other decomposition products produced by the action of various microor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G24/12A01G24/20A01G24/10C05G3/00C04B33/132C04B33/13
CPCA01G24/10A01G24/12A01G24/20C04B33/1305C04B33/1321C04B33/1324C05D5/00C05G3/00C05F5/008C05F7/00C05F11/08C05G1/00Y02P40/60
Inventor 庞鹤马跃王酉宁
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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