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Light ceramsite prepared from oil shale semi-coke and preparation method thereof

An oil shale semi-coke, light ceramsite technology, applied in the application, household appliances, clay products and other directions, can solve the problems of endangering the health of surrounding residents, seriously polluting land and water sources, destroying soil productivity, etc. Use value, expand the melting temperature range, solve the effect of low capacity value

Inactive Publication Date: 2016-07-06
陕西省能源化工研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oil shale semi-coke is the solid product of oil shale after low-temperature dry distillation, and oil shale ash is the residue obtained from oil shale placed in a muffle furnace at a constant temperature of 800 ° C for 2 hours (that is, oil shale after Dry distillation or waste generated after combustion), for a long time, in the process of oil shale development and utilization, a huge amount of oil shale semi-coke and oil shale ash will be produced, and these products are discarded and piled up in large quantities. Heavy metal elements, after the accumulation is leached or diffused by rainwater, these elements will seriously pollute the surrounding land and water sources, which not only destroys the productive capacity of the soil, but also endangers the health of surrounding residents, thus causing serious environmental pollution problems virtually.

Method used

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  • Light ceramsite prepared from oil shale semi-coke and preparation method thereof
  • Light ceramsite prepared from oil shale semi-coke and preparation method thereof
  • Light ceramsite prepared from oil shale semi-coke and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A lightweight ceramsite prepared from oil shale semi-coke, consisting of the following raw materials in mass percentage:

[0019]

[0020] The preparation method of this lightweight ceramsite comprises the steps:

[0021] 1) Crushing the oil shale semi-coke, weighing the broken oil shale semi-coke, oil shale ash and clay according to the above ratio, mixing and grinding, and grinding for 3 hours to obtain a mixture;

[0022] 2) Put the mixture into the ball forming disc of the disc granulator, prepare water glass into 0.01% aqueous solution in advance, spray it on the mixture in the disc with a spraying device, roll into balls in the ball forming disc, and get wet material ball;

[0023] 3) The maximum particle size of the obtained wet pellets is 10mm, first let it dry naturally for 12 hours, and then place it in an oven at a temperature of 100°C to dry;

[0024] 4) Place the sieved pellets in a sintering kiln for sintering at a temperature of 1130°C and keep the t...

Embodiment 2

[0028] A lightweight ceramsite prepared from oil shale semi-coke, consisting of the following raw materials in mass percentage:

[0029]

[0030] The preparation method of this lightweight ceramsite comprises the steps:

[0031] 1) Crushing the oil shale semi-coke, weighing the broken oil shale semi-coke, oil shale ash and clay according to the above ratio, mixing and grinding, and grinding for 3 hours to obtain a mixture;

[0032] 2) Put the mixture into the ball forming disc of the disc granulator, prepare water glass into 0.02% aqueous solution in advance, spray it on the mixture in the disc with a spray device, roll it into balls in the ball forming disc, and get wet material ball;

[0033] 3) The maximum particle size of the obtained wet pellets is 10mm, first let it dry naturally for 12 hours, and then place it in an oven at a temperature of 100°C to dry;

[0034] 4) Place the sieved pellets in a sintering kiln for sintering at a temperature of 1140°C and keep the t...

Embodiment 3

[0038] A lightweight ceramsite prepared from oil shale semi-coke, consisting of the following raw materials in mass percentage:

[0039]

[0040] The preparation method of this lightweight ceramsite comprises the steps:

[0041]1) Crushing the oil shale semi-coke, weighing the broken oil shale semi-coke, oil shale ash and clay according to the above ratio, mixing and grinding, and grinding for 3 hours to obtain a mixture;

[0042] 2) Put the mixture into the ball forming disc of the disc granulator, prepare water glass into 0.02% aqueous solution in advance, spray it on the mixture in the disc with a spray device, roll it into balls in the ball forming disc, and get wet material ball;

[0043] 3) The maximum particle size of the obtained wet pellets is 10mm, first let it dry naturally for 12 hours, and then place it in an oven at a temperature of 100°C to dry;

[0044] 4) Place the sieved pellets in a sintering kiln for sintering at a temperature of 1150°C and keep the te...

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Abstract

The invention relates to light ceramsite prepared from oil shale semi-coke and a preparation method thereof. The light ceramsite consists of the raw materials such as oil shale semi-coke, oil shale ash, clay and water glass. The preparation method comprises the process steps such as pulverization, pelletizing, sintering and cooling. The light ceramsite provided by the invention has the advantages of widely available raw materials, easiness in preparation, low production cost, environmental friendliness and the like; by implementing the technical scheme, much land occupation caused by stacking oil shale semi-coke and ash can be reduced, consequent severe threat to the ecology, environment and human health is relieved, the problems such as low capacity value, low water absorption and low cylinder compressive strength of the commercially available ceramsite products are solved, and the use value of the oil shale semi-coke is increased so that the oil shale semi-coke is turned into wealth; and the light ceramsite is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of building materials, and relates to a lightweight ceramsite prepared by using oil shale semi-coke and a preparation method thereof. Background technique [0002] As a light aggregate, ceramsite has the characteristics of low density, high strength, high water absorption, heat preservation, heat insulation, shock resistance, and fire resistance. It can also be used as a medium for soilless cultivation in agriculture and gardens, as well as building materials such as bridge decks, hollow non-load-bearing blocks or concrete components. In the prior art, the known ceramsite generally uses clay, biological sludge, etc. as the main raw materials, and is formed by high-temperature roasting and puffing. Due to the limited source of raw materials, the known ceramsite products still have serious environmental pollution in the actual preparation process. There are many problems such as large size, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/135
CPCC04B33/132C04B33/135C04B2235/3427Y02P40/60
Inventor 周立发李阳阳刘伟刚路平巨浩波魏涛高建平罗婷陈永振白勇
Owner 陕西省能源化工研究院
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