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Preparation methods of silicalite and industrial puffed silicalite

A siliceous rock and puffed material technology is applied in the field of waste gas utilization, which can solve the problems affecting the life and property safety of residents in the ecological environment of the mining area, pollute the water source and air, waste resources, etc., and achieve the effect of easy control, good effect and small investment.

Inactive Publication Date: 2015-01-21
四川海吉尔环保科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now, coal gangue has become an "industrial waste" with three hazards of solid, liquid and gas. Its long-term stacking not only wastes resources, occupies a large amount of land, but also pollutes water sources, soil and the surrounding air; seriously affects The ecological environment of the mining area and the safety of life and property of residents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] A preparation method of siliceous rock, is characterized in that, comprises the following steps:

[0034] i, prepare a dense medium solution, mix magnetite powder and water according to a weight ratio of 1:2, and prepare a dense medium solution with a specific gravity of 3;

[0035] ii, crushing, crushing the coal gangue into 1~10mm particles;

[0036] iii, flotation, pour the pulverized coal gangue into the dense medium solution, and add the mixed material to the flotation machine for flotation; after 2 hours, separate from the bottom of the flotation machine to obtain siliceous rock and Mixed substances of dense medium solutions;

[0037] vi, magnetic separation, the mixture of the above-mentioned siliceous rock and dense medium solution is dried, and then passed through a magnetic separator to obtain siliceous rock.

[0038] SiO in the chert obtained in step vi 2 The weight percentage is 75%~80%. Fe in the chert obtained in step vi 3 o 4 The weight percentage i...

Embodiment 1

[0054] 1. To prepare siliceous rock, mix magnetite powder and water at a weight ratio of 1:2 to obtain a dense medium solution with a specific gravity of 3; crush the gangue into particles of 1-10 mm; crush the Coal gangue is poured into the dense medium solution, and the mixed material of the two is added to the flotation machine for flotation; after 2 hours, the mixed substance of siliceous rock and dense medium solution is obtained from the bottom of the flotation machine; the above silicon After drying the mixed material of the siliceous rock and the dense medium solution, the siliceous rock is obtained through a magnetic separator; the SiO in the above siliceous rock 2 The weight percentage is 75%, Fe 3 o 4 The weight percentage is 4%, Al 2 o 3 The percentage by weight of MgO is 8%, the percentage by weight of MgO is 6%, and the percentage by weight of CaO is 7%;

[0055] 2. Grinding, adding 0.7% stearic acid by weight of gangue to coal gangue to reduce the agglomerat...

Embodiment 2

[0063] 1. To prepare siliceous rock, mix magnetite powder and water at a weight ratio of 1:2 to obtain a dense medium solution with a specific gravity of 3; crush the gangue into particles of 1-10 mm; crush the Coal gangue is poured into the dense medium solution, and the mixed material of the two is added to the flotation machine for flotation; after 2 hours, the mixed substance of siliceous rock and dense medium solution is obtained from the bottom of the flotation machine; the above silicon After drying the mixed material of the siliceous rock and the dense medium solution, the siliceous rock is obtained through a magnetic separator; the SiO in the above siliceous rock 2 The weight percentage is 78%, Fe 3 o 4 The weight percentage is 6%, Al 2 o 3 The percentage by weight of MgO is 6%, the percentage by weight of MgO is 4%, and the percentage by weight of CaO is 6%;

[0064] 2. Grinding, adding 0.7% benzenesulfonic acid of gangue weight to coal gangue to reduce the agglo...

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Abstract

The invention discloses a preparation method of silicalite. Through utilization of the large specific gravity characteristic of silicalite, silicalite is separated from coal gangue by flotation and magnetic separation so that the existing coal gangue slag can be treated and silicalite having social and economic benefits is obtained. The invention also discloses a preparation method of industrial puffed silicalite. The preparation method comprises the following steps of A, silicalite preparation, B, grinding, C, blending, D, blank preparation, E, drying, F, sintering, and G, cooling. The preparation method of the industrial puffed silicalite realizes the combination of silicalite preparation and industrial puffed silicalite preparation, has environmental protection effects, and can greatly reduce a production cost. The industrial puffed silicalite has good hardness and fire resistance, stable physical and chemical properties, satisfies the architectural material industry standard (JC / T945-2005) requirements, and can be widely used for building brickwork, building floors and wall decoration.

Description

technical field [0001] The invention belongs to the technical field of waste gas utilization, and relates to the recycling of coal gangue waste, in particular to a method for preparing siliceous rock from coal gangue and a method for preparing siliceous rock puffed products from siliceous rock. Background technique [0002] Coal gangue is the solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content and harder than coal that is associated with the coal seam during the coal formation process, including the excavation during the roadway excavation process. The gangue, the gangue guessed from the roof, floor and interlayer during the mining process, and the gangue picked out during the coal washing process, its main component is Al 2 o 3 , SiO 2 , also contains varying amounts of Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O.P 2 o 5 , SO 3 and trace rare elements (gallium, vanadium, titanium, cobalt). [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/22C04B38/02
CPCY02P40/60
Inventor 邹健彪
Owner 四川海吉尔环保科技发展有限公司