Silicate cement clinker and preparation method thereof

A technology for Portland cement and clinker, applied in the field of cement manufacturing, can solve the problems of pollution discharge, increase of waste sand, waste of resources, etc., and achieve the effects of reducing firing temperature, reducing production cost, and saving firing energy consumption.

Inactive Publication Date: 2019-03-08
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, my country's foundry industry has low technical level, high energy consumption, and long-standing problems of pollution emissions. The poor regenerability of limestone sand has led to a substantial increase in the amount of waste sand discharged from foundry production, and the cost of castings has increased. Casting companies rarely invest in recycling equipment. Leading to the discharge and dumping of tens of

Method used

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  • Silicate cement clinker and preparation method thereof
  • Silicate cement clinker and preparation method thereof
  • Silicate cement clinker and preparation method thereof

Examples

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Embodiment 1

[0044] As a preferred embodiment of the application, this embodiment discloses:

[0045] A portland cement clinker, comprising the following raw materials in weight percentage: Calcareous material: limestone 42-72%, siliceous material 1-20%, supplementary calcium material 10-40%, iron material 0-5% ; Iron-aluminum material 3-15%; The supplementary calcium material is limestone molding sand waste. The siliceous material is a mixture of one or more of clay, shale, quartz sand and fly ash. The ferrous material is a mixture of one or more of sulfuric acid slag, non-ferrous metal slag, copper slag, lead-zinc slag and manganese slag. The iron-aluminum material is a mixture of one or more of high-iron bauxite, low-grade bauxite and aluminum ore waste.

[0046] Further, as a more preferred embodiment, the following ratios are adopted:

[0047]

[0048] Table 4

[0049]

[0050] table 5

[0051] From the above comparison results, it can be seen that the hydration heat value ...

Embodiment 2

[0053] Further as a preferred embodiment, the following ratio is adopted in the present embodiment:

[0054]

[0055] Table 6

Embodiment 3

[0057] Further as a preferred embodiment, the present embodiment adopts the following ratios:

[0058]

[0059] Table 7

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Abstract

The invention discloses silicate cement clinker and a preparation method thereof, and relates to the technical field of preparation of cement. The silicate cement clinker prepared by the invention isprepared from the following raw materials in percentage by weight: 42-72% of limestone as a calcium material, 1-20% of a silicon material, 10-40% of a supplement calcium material, 0-5% of an iron material, and 3-15% of an iron-aluminium material. The supplement calcium material is limestone moulding sand waste. According to the invention, the limestone moulding sand waste is applied to the cementclinker, so that cost of the enterprises can be reduced; waste can be changed into things of value; and great social benefits and economic benefits are achieved for society and the enterprises.

Description

technical field [0001] The present invention relates to the technical field of cement manufacture, and more specifically relates to a Portland cement clinker and a preparation method thereof. Background technique [0002] Limestone molding sand is an important mold for casting molding in the foundry industry. It is made by mixing raw sand, binder and water in a certain proportion, and sometimes adding auxiliary materials such as coal powder or wood chips. According to statistics, about 1.2 tons of waste sand can be produced for every ton of qualified castings produced. There are at least tens of millions of tons of waste sand produced by casting, and the amount is very large. However, my country's foundry industry has low technical level, high energy consumption, and long-standing problems of pollution emissions. The poor regenerability of limestone sand has led to a substantial increase in the amount of waste sand discharged from foundry production, and the cost of casting...

Claims

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Application Information

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IPC IPC(8): C04B7/26C04B7/24C04B7/42C04B7/38C04B7/43C04B7/44
CPCC04B7/24C04B7/26C04B7/38C04B7/421C04B7/434C04B7/44Y02P40/10
Inventor 张凌志古安林
Owner JIAHUA SPECIAL CEMENT
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