Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of using industrial solid slag to produce silicate cement for nuclear power engineering

A portland cement and nuclear power engineering technology, applied in cement production, etc., can solve problems such as high alkali content and inability to produce portland cement that meets market requirements, and achieve the goals of protecting the ecological environment, saving costs, and saving natural raw materials Effect

Inactive Publication Date: 2017-02-15
酒钢(集团)宏达建材有限责任公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Limestone raw materials, clay raw materials, and iron corrected raw materials for traditional cement production have high alkali content, which cannot produce Portland cement for nuclear power projects that meets market requirements.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of using industrial solid slag to produce silicate cement for nuclear power engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for producing Portland cement for nuclear power engineering from industrial solid waste, using raw materials in proportions by weight: 72.0% of limestone mining waste, 16.0% of silica mining waste, 2.0% of blast furnace slag, and 10.0% of iron ore mining tailings ; After the above raw materials are mixed and ground, they are sequentially subjected to preheater heat exchange, gas-solid separation treatment, decomposition furnace carbonate decomposition, dry rotary kiln calcination, and cooling to obtain Portland cement clinker; the temperature in the middle of the decomposition furnace is 830°C, and the temperature of the tail smoke chamber of the dry rotary kiln is 900°C; the blast furnace water slag is mixed and ground before going through a magnetic separator to remove iron.

Embodiment 2

[0031] A method for producing Portland cement for nuclear power engineering from industrial solid waste, using raw materials in proportions by weight: 75.0% of limestone mining waste, 12.0% of silica mining waste, 1.0% of blast furnace slag, and 12.0% of iron ore mining tailings ; After the above raw materials are mixed and ground, they are sequentially subjected to preheater heat exchange, gas-solid separation treatment, decomposition furnace carbonate decomposition, dry rotary kiln calcination, and cooling to obtain Portland cement clinker; the temperature in the middle of the decomposition furnace The temperature is 850°C, and the temperature of the tail smoke chamber of the dry-process rotary kiln is 950°C; the blast furnace water slag is mixed and ground before going through a magnetic separator to remove iron.

Embodiment 3

[0033] A method for producing Portland cement for nuclear power engineering from industrial solid waste residues. The ratio of raw materials used is: limestone mining waste residue 78.0%, silica mining waste residue 9.0%, blast furnace slag 5.5%, iron ore mining tailings 7.5% ; After the above raw materials are mixed and ground, they are sequentially subjected to preheater heat exchange, gas-solid separation treatment, decomposition furnace carbonate decomposition, dry rotary kiln calcination, and cooling to obtain Portland cement clinker; the temperature in the middle of the decomposition furnace The temperature is 870°C, and the temperature of the tail smoke chamber of the dry rotary kiln is 1000°C; the blast furnace slag is mixed and ground before going through a magnetic separator to remove iron.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a silicate cement production method, and specifically relates to a method of using industrial solid slag to produce silicate cement for nuclear power engineering. The silicate cement comprises the following raw materials in percentage by weight: 72.0 to 78.0% of limestone mining waste, 7.0 to 16.0% of silica mining waste, 1.0 to 5.5% of blast furnace granulated slag, and 8.0 to 12.0% of tailings of iron ore mining. The abovementioned raw materials are mixed and milled and then the powder is subjected to heat change in a pre-heater, a gas-solid separation treatment, carbonate decomposition in a decomposing furnace, calcining in a dry-process rotary kiln, and cooling so as to obtain silicate cement clinker. According to the method, limestone mining waste, silica mining waste, blast furnace granulated slag, and tailings of iron ore mining are taken as the raw materials to produce silicate cement that is qualified for nuclear power engineering, a large amount of natural raw materials is saved, the energy consumption is reduced, the cost is saved, and the ecological environment is protected.

Description

technical field [0001] The invention relates to a method for producing Portland cement, in particular to a method for producing Portland cement for nuclear power engineering from industrial solid waste. Background technique [0002] Cement is the most commonly used bulk building material in nuclear power engineering construction, and its quality directly affects the safety of nuclear power engineering construction and operation. Due to the particularity of nuclear power projects, the requirements for all materials are very strict; the establishment and implementation of the "Portland Cement for Nuclear Power Engineering" GB / T31545-2015 national standard implemented on February 1, 2016, regardless of the localization of nuclear power in my country And security, or the development of my country's special cement industry is very important. [0003] Portland cement used in nuclear power projects has the characteristics of low heat of hydration, high early strength, strong sulfat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B7/24
CPCC04B7/24Y02P40/10
Inventor 武学龙常占新鄢平翟胜利赵建清赵小琴
Owner 酒钢(集团)宏达建材有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com