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Method for preparing cement clinker by using oil shale waste residues

A technology of oil shale waste residue and cement clinker, which is applied in the field of building materials, can solve problems such as pollution, land occupation and the environment, and achieve the effects of avoiding a large amount of accumulation, reasonable mineral composition and strength, and reducing production costs

Active Publication Date: 2013-01-09
FUSHUN MINING IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing cement clinker with oil shale waste residue, which can turn oil shale waste residue into treasure, thereby solving the problems of land occupation and environmental pollution, and at the same time better achieve oil shale The purpose of rock comprehensive utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] ①Mix oil shale waste residue, limestone, iron tailings sand and molding sand according to the following ratio:

[0011] Limestone: 82%; Shale waste residue: 14%; Iron tailings sand: 1.5%; Molding sand: 2.5%;

[0012] ②Grind the mixture obtained in step 1 into 80μm square hole sieve with less than 5% of the raw meal, then put the raw meal into the kiln for calcination, and calcine at 1350-1450°C for 15-20 minutes, and cool it after leaving the kiln to obtain cement clinker.

Embodiment 2

[0013] Embodiment 2: Limestone: 82%, oil shale waste residue: 13%, iron tailings: 2.0, molding sand: 3.0

[0014] ①Mix oil shale waste residue, limestone, iron tailings sand and molding sand according to the following ratio:

[0015] Limestone: 82%; Shale waste: 13%; Iron tailings: 2.0%; Molding sand: 3.0%;

[0016] ②Grind the mixture obtained in step 1 into 80μm square hole sieve with less than 5% of the raw meal, then put the raw meal into the kiln for calcination, and calcine at 1350-1450°C for 15-20 minutes, and cool it after leaving the kiln to obtain cement clinker.

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PUM

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Abstract

The invention discloses a method for preparing cement clinker by using oil shale waste residues. The method comprises the following steps of: 1, mixing the following components according to the following proportions: 81 to 84 percent of limestone, 12 to 15 percent of shale waste residues, 1 to 2 percent of iron tailings sand and 2 to 4 percent of moulding sand; and 2, grinding the mixture obtained in the step 1 to obtain raw materials which is screened by a 80um square-hole sieve of which the screen residue is less than 5 percent, calcining the raw materials at temperature of between 1,350 and 1,450 DEG C for 15 to 20 minutes, and cooling to obtain the cement clinker. The method is used for preparing the cement clinker by using the oil shale waste residues replacing clay, so that a large quantity of clay resources are saved, and the production cost of the cement is reduced; furthermore, the doped quantity of the oil shale waste residues is large and up to 13 percent, so that the oil shale waste residues are used fully; therefore, the economic benefit is increased, wastes are turned into treasures, a large quantity of stacked residues are avoided, the land occupied amount is reduced, and the environment pollution is reduced.

Description

1. Technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing cement clinker with oil shale waste residue. 2. Background technology [0002] my country is rich in oil shale resources, and the recoverable shale oil resources are 12 billion tons, mainly distributed in Huadian, Nong'an, Jilin Province, Maoming, Guangdong, and Fushun, Liaoning, ranking fourth in the world. The main utilization methods of oil shale resources are refining shale oil and direct combustion for power generation. Taking Fushun as an example, nearly 400,000 tons of shale oil is produced from oil shale every year, and 5 million tons of oil shale waste residue is produced a year. At present, there are not many methods for effectively utilizing oil shale residues, resulting in a large accumulation of oil shale residues, which not only occupies a large area of ​​land, but also has a relatively large environmental pollution ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00
Inventor 韩放张振庭鲍明福刘晔蒋自强赵鑫李理郭中和
Owner FUSHUN MINING IND GROUP
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