Unlock instant, AI-driven research and patent intelligence for your innovation.

Ceramsite prepared from high-silicon fine iron tailings and preparation method thereof

A technology for iron tailings and fine particles is applied in the field of ceramsite made from high-silicon fine-grained iron tailings and its production, which can solve the problems of polluting the environment and occupying cultivated land, and achieve the effects of reducing harm and reducing raw material costs.

Inactive Publication Date: 2012-06-06
鞍钢集团矿业设计研究院有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-silicon fine-grained iron tailings are waste, which are stored in the tailings pond for a long time, which not only invades the cultivated land, but also pollutes the environment.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The raw materials are weighed according to the following proportions by weight: 55 parts of iron tailings, 20 parts of fly ash, 10 parts of coal gangue, and 15 parts of red mud. After mixing, plasticizing and homogenizing, granulate with a roller machine . 3000 kg of the above-mentioned prefabricated ceramsite was fired in a rotary kiln at a temperature of 1150°C. The performance test results of the product are:

[0035] Water Absorption: 9.0%

[0036] Cylinder compressive strength: 3.3Mpa

[0037] Bulk density: 698 kg / m3

Embodiment 2

[0039] The raw materials are weighed according to the following proportions by weight: 55 parts of iron tailings, 25 parts of fly ash, 10 parts of coal gangue, and 10 parts of red mud, which are artificially granulated after mixing, plasticizing and homogenizing. 1 kg of the above-mentioned prefabricated ceramsite was fired in a box-type electric furnace at a temperature of 1150°C. The water absorption rate, cylinder compressive strength, bulk density and other indicators of the samples are in line with the national building materials industry standards.

Embodiment 3

[0041] The raw materials are weighed according to the following proportions by weight: 60 parts of iron tailings, 10 parts of fly ash, 10 parts of coal gangue, and 20 parts of red mud, which are artificially granulated after mixing, plasticizing and homogenizing. 1 kg of the above-mentioned prefabricated ceramsite was fired in a box-type electric furnace at a temperature of 1200°C. The water absorption rate, cylinder compressive strength, bulk density and other indicators of the samples are in line with the national building materials industry standards.

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

PropertyMeasurementUnit
cylinder compressive strengthaaaaaaaaaa
water absorptionaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of comprehensive exploitation of iron tailings, in particular to ceramsite prepared from high-silicon fine iron tailings and a preparation method thereof. The ceramsite is characterized by being prepared from the following raw materials in part by weight: 55 to 60 parts of fine iron tailings, 10 to 25 parts of coal ash, 5 to 10 parts of coal gangue and10 to 20 parts of red mud. The preparation method comprises the following steps of: weighing the components of the raw materials according to the weight ratio; mixing, plasticizing and homogenizing the components of raw materials, and then prefabricating ceramsite by using a roller mill; feeding the produced ceramsite to a rotary kiln for burning and expanding; placing the ceramsite in a materialstockpiling factory for natural cooling; and detecting the performance of cooled ceramsite product, wherein the products of which the indexes of water absorption, cylindrical compress strength and bulk density meet the Chinese building material industrial standards are the final products. In the method, the ceramsite is prepared from waste, and clay is replaced by high-silicon fine iron tailings,so the environmental pollution and production cost are reduced; therefore, the method has good social and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of comprehensive development of tailings, in particular to ceramsite made from high-silicon fine-grained iron tailings and a manufacturing method thereof. Background technique [0002] Ceramsite is a man-made concrete lightweight aggregate made of various clays, mudstones, slates, etc. The interior of ceramsite has a honeycomb structure, which has the characteristics of light weight, high strength, low thermal conductivity, and small water absorption. It has become an excellent material for thermal insulation, earthquake resistance, fire prevention, moisture resistance, and sound absorption and noise reduction. important one. [0003] Because ceramsite has high porosity, stable chemical properties, high mechanical strength, good filtered water quality (less than 3 degrees), no harmful substances, strong permeability, high filtration rate (15-20 m / h), high water production, etc. Its main technical indicator...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00C04B38/00
Inventor 刘雁翎周惠文薛敏
Owner 鞍钢集团矿业设计研究院有限公司