G-level oil well cement clinker with converter slag as raw material and preparation method of G-level oil well cement clinker

A technology of oil well cement and converter slag, which is applied in the direction of cement production, etc., can solve the problems of easily restricted product life cycle and high production cost, and achieve the effects of good strength and stability, stable quality, and reduced carbon emissions

Inactive Publication Date: 2019-10-22
JILIN YATAI CEMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, Portland cement clinker is generally used as G-grade oil well cement clinker. Since the cement clinker is basically prepared from high-quality limestone, clay and iron ore, with the increasing scarcity of resources, It has problems such as high production cost and easy restriction of product life cycle

Method used

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  • G-level oil well cement clinker with converter slag as raw material and preparation method of G-level oil well cement clinker
  • G-level oil well cement clinker with converter slag as raw material and preparation method of G-level oil well cement clinker
  • G-level oil well cement clinker with converter slag as raw material and preparation method of G-level oil well cement clinker

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Effect test

Embodiment 1

[0027] This embodiment provides a G grade oil well cement clinker using converter slag as a raw material and a preparation method thereof. Specifically, the preparation method of the G grade oil well cement clinker includes the following steps:

[0028] S1. Weigh 0.65t of limestone, 0.22t of converter slag, 0.04t of bauxite and 0.09t of silica for later use; wherein, Fe in converter slag 2 o 3 The mass fraction is 18%.

[0029] S2. Mix the above-mentioned weighed limestone, converter slag, bauxite and silica, and grind until the sieve residue after passing through an 80 μm square hole sieve is 5%, to obtain raw meal.

[0030] S3. After homogenizing the raw meal, use the five-stage cyclone pre-decomposition system of the existing dry process cement kiln system to perform preheating and decomposition treatment. The temperature of the preheating and decomposition treatment is controlled at 850°C. Specifically, the decomposition The outlet temperature of the furnace is 850°C; th...

Embodiment 2

[0034] This embodiment provides a G grade oil well cement clinker using converter slag as a raw material and a preparation method thereof. Specifically, the preparation method of the G grade oil well cement clinker includes the following steps:

[0035] S1. Weigh 0.81t of limestone, 0.14t of converter slag, 0.01t of bauxite and 0.04t of silica for subsequent use; wherein, Fe in converter slag 2 o 3 The mass fraction of is 22%.

[0036] S2. Mix the above-mentioned weighed limestone, converter slag, bauxite and silica, and grind until the sieve residue after passing through an 80 μm square hole sieve is 18%, to obtain raw meal.

[0037] S3. After homogenizing the raw meal, use the five-stage cyclone pre-decomposition system of the existing dry process cement kiln system to perform preheating and decomposition treatment. The temperature of the preheating and decomposition treatment is controlled at 880°C. Specifically, the decomposition The outlet temperature of the furnace is ...

Embodiment 3

[0041] This embodiment provides a G grade oil well cement clinker using converter slag as a raw material and a preparation method thereof. Specifically, the preparation method of the G grade oil well cement clinker includes the following steps:

[0042] S1. Weigh 0.71t of limestone, 0.18t of converter slag, 0.03t of bauxite and 0.08t of silica for later use; wherein, Fe in converter slag 2 o 3 The mass fraction is 20%.

[0043] S2. Mix the above-mentioned weighed limestone, converter slag, bauxite and silica, and grind until the sieve residue after passing through an 80 μm square hole sieve is 10%, to obtain raw meal.

[0044] S3. After homogenizing the raw meal, use the five-stage cyclone pre-decomposition system of the existing dry process cement kiln system to perform preheating and decomposition treatment, wherein the temperature of the preheating and decomposition treatment is controlled at 870°C. The outlet temperature of the furnace is 870°C; the outlet temperature of...

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Abstract

The invention discloses a G-level oil well cement clinker with converter slag as a raw material and a preparation method of the G-level oil well cement clinker, and belongs to the fields of cement production and waste recycling. The preparation method of the G-level oil well cement clinker with converter slag as the raw material comprises the following steps: firstly mixing limestone, converter slag, bauxite and silica, performing powder-grinding to obtain a raw material; then performing homogenization treatment on the raw material, and performing preheating decomposition treatment; and then performing high-temperature calcination treatment on the raw material after pre-heating decomposition treatment, quickly chilling the high-temperature clinker to obtain the G-level oil well cement clinker. The converter slag is used as the raw material for producing the cement clinker, so that the comprehensive utilization of the industrial waste can be realized, and the carbon emission in the cement clinker production process can be reduced. Furthermore, the strength and the stability of the G-level oil well cement clinker are relatively good, the quality is relatively stable, and requirementsfor the use of an oil well can be satisfied.

Description

technical field [0001] The invention relates to the fields of cement production and waste utilization, in particular to a G-grade oil well cement clinker using converter slag as a raw material and a preparation method thereof. Background technique [0002] The preparation of cement clinker by dry process cement kiln is a commonly used cement clinker preparation method in the cement industry. It mainly uses limestone, clay and iron raw materials as the main raw materials, and prepares raw materials in appropriate proportions. The production equipment used mainly includes Multi-stage preheater (generally 5 stages), calciner, smoke chamber and rotary kiln. [0003] At present, Portland cement clinker is generally used as G-grade oil well cement clinker. Since the cement clinker is basically prepared from high-quality limestone, clay and iron ore, with the increasing scarcity of resources, It has problems such as high production cost and easy restriction of product life cycle. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/147C04B7/36C04B7/47
CPCC04B7/147C04B7/36C04B7/47Y02P40/10
Inventor 谷万一朱军徐宏彬任万吉
Owner JILIN YATAI CEMENT
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