Enrichment of heavy metals in coal gangue by puff balls

2014-10-27  To adopt artificial microbial inoculation is to take advantage of microbe activity to develop the po- tential fertility of coal gangue dumps and to help its ecological reconstruction. Bi et al. (2006) conducted biotic reclamation of coal gangue abandoned matrix by inoculation of my-

Glass-ceramics fabricated by efficiently utilizing coal

Using coal gangue of 75% and coal gangue to clay ratio of 3/1 made the mechanical properties optimal. The sintering temperature of 1370 °C was found to be optimal because mullite and spinel

煤矸石集料混凝土抗压强度及耐久性能-Compressive

The substitution of calcined coarse coal gangue can result in a more dense concrete structure compared to uncalcined coarse coal gangue, and nonetheless holds slight advantage due to its intrinsic defects. Further research is expected to promote the

AnTec C-98|AnTec C-60|AnTec WE|AnTec C-OP-

The company is situated in China Coal Pinglu opencast mine area with rich and high-quality coal gangue resources, thus it has high-quality raw materials for calcined kaolin. Advantage 2 In 2005, the company replaced gas with natural gas in order to improve product quality; in 2009, it acquired Suzhou Jingping Natural Gas Company for ensuring

Enrichment of heavy metals in coal gangue by puff balls

2017-8-28  Coal gangue is the solid waste in coal production and preparation. The coal gangue yield is 10%–30% of the raw coal. According to incomplete statistics, the take advantage of microbe activity to develop the po-tential fertility of coal gangue dumps and to help its ecological reconstruction. Bi et al. (2006) conducted biotic reclamation of

Study on Coal Gangue Ground Treatment Technology

This article put forward a treatment technology which took advantage of grouting method flame retardant against the slight spontaneous combustion characteristics of coal gangue. Using chemical composition analysis test,screening tests,compaction tests etc. analyzed physical properties,chemical properties and mechanical properties of coal gangue.

The Study of Automatic Counting of Coal and Gangue

In this paper, an image processing and recognition system of the coal and gangue has been studied, which is made up by the chip DM6437 and some peripheral auxiliary equipment. The image processing arithmetic is realized by the CCS programming environment, and loaded into the target board through the simulator XDS510. The system takes advantage of the high performance of the chip to process the

Radiation characteristics of natural gamma-ray from

2018-1-9  In China, coal is the main energy source, accounting for about 70% of primary energy production and consumption 1,2.Since top coal caving mining method has the advantage of high-production, high

Materials Free Full-Text Study of Mechanical

Coal gangue, which has a similar composition to clay , is a solid waste produced during coal mining and processing [6,7,8,9,10], and its annual production accounts for about 10% to 15% of the coal output in that year [6,7,11].Fresh undisturbed coal gangue does not have pozzolanic activity , which in general leads to the low strength of coal gangue aggregate concrete and severely limits its

Coal Grinding Mill Plant Manufacturers

4. Coal gangue powder can replace clay to become the material of brick making, because carbon element can solve the problem of energy. 5. Gangue can also be used to produce low calorific value gas, ceramics and soil improver. 6. The coarse coal gangue powder can be used for road paving, underground filling and ground filling. Advantage Analysis

Synthesis of zeolite SSZ-13 from coal gangue via

2019-12-1  The chemical compositions of the raw coal gangue, after grinding and drying, were determined by XRF analysis. The results were depicted in Table 1.XRF results showed the main elements of coal gangue were silicon, aluminum, sulfur, iron and so on, of which, the content of SiO 2 and Al 2 O 3 were more than 80% of the total mass and the SiO 2 /Al 2 O 3 mass ratio is 1.34.

Original Research Comprehensive Landscape Ecology

transformation [16, 17]. For coal gangue fi lling reclaimed lands, it would be important to understand the magnitude and pattern of land-cover change. Furthermore, landscape stability is a proven index that is effective for revealing past changes [18]. This paper takes advantage of stability analysis of

China Coking Coal Industry Report, Market Forecast and

2014-4-25  China Coal Gangue Industry Market Research and Investment Forecast Report, 2013-2017 China Coal Industry Development Prospect and Investment Strategic Planning Report, 2013-2017 China Coal Trade Industry Report (2014-2018), Development Prospect

AnTec C-98|AnTec C-60|AnTec WE|AnTec C-OP-

The company is situated in China Coal Pinglu opencast mine area with rich and high-quality coal gangue resources, thus it has high-quality raw materials for calcined kaolin. Advantage 2 In 2005, the company replaced gas with natural gas in order to improve product quality; in 2009, it acquired Suzhou Jingping Natural Gas Company for ensuring

RSC Advances

2 of coal gangue. Key words: SiO 2-Al2O3 aerogel, ambient pressure drying, organic solvent absorption, coal gangue 1. Introduction After the discovery of the M41S family, mesoporous materials have attracted a large number of investigations because of their outstanding properties.1-5 Aerogel, a typical mesoporous materials, is a kind of nanoporous material with continuous random network

Study on Coal Gangue Ground Treatment Technology

This article put forward a treatment technology which took advantage of grouting method flame retardant against the slight spontaneous combustion characteristics of coal gangue. Using chemical composition analysis test,screening tests,compaction tests etc. analyzed physical properties,chemical properties and mechanical properties of coal gangue.

Materials Free Full-Text Study of Mechanical

Coal gangue, which has a similar composition to clay , is a solid waste produced during coal mining and processing [6,7,8,9,10], and its annual production accounts for about 10% to 15% of the coal output in that year [6,7,11].Fresh undisturbed coal gangue does not have pozzolanic activity , which in general leads to the low strength of coal gangue aggregate concrete and severely limits its

Simulation Research on the Influence of the Clearance

When coal gangue particles impact on the tail beam, according to equations ()–(), the normal force between them is among whichThe contact surface of the tail beam can be equivalent to a sphere with an infinite radius, i.e.,,so the equivalent contact radius between coal gangue particles and the tail beam is The tangential force when coal gangue impacts the tail beam is

Evaluation for the Leaching of Cr from Coal Gangue

Coal gangue can cause significant heavy metal pollution in mining areas, which would have a negative impact on the environment and human health. The objective of this research is to investigate the relationship between expansive soil amount and the leaching behavior of Chromium from coal gangue and the engineering properties of coal gangue used as building materials.

URBAN ENERGY SAVING AND CARBON REDUCTION

2014-2-16  compared with the conventional types of bricks while coal gangue brick has advantages of energy saving but having no advantage of reduction in carbon emissions. In addition, the differences of embodied energy and carbon emissions of residential buildings using new-types of bricks and conventional types of bricks are analyzed.

Original Research Comprehensive Landscape Ecology

transformation [16, 17]. For coal gangue fi lling reclaimed lands, it would be important to understand the magnitude and pattern of land-cover change. Furthermore, landscape stability is a proven index that is effective for revealing past changes [18]. This paper takes advantage of stability analysis of

AnTec C-98|AnTec C-60|AnTec WE|AnTec C-OP-

The company is situated in China Coal Pinglu opencast mine area with rich and high-quality coal gangue resources, thus it has high-quality raw materials for calcined kaolin. Advantage 2 In 2005, the company replaced gas with natural gas in order to improve product quality; in 2009, it acquired Suzhou Jingping Natural Gas Company for ensuring

China Coking Coal Industry Report, Market Forecast and

2014-4-25  China Coal Gangue Industry Market Research and Investment Forecast Report, 2013-2017 China Coal Industry Development Prospect and Investment Strategic Planning Report, 2013-2017 China Coal Trade Industry Report (2014-2018), Development Prospect

Mechanical analysis of basic roof fracture mechanism

A series of problems are encountered during the transition period of coal mining of Pingdingshan No. 12 Coal Mine: large volumes of gangue are taken from near full-rock protective coal seam, no accumulation space on the earth surface and failure of meeting the production capacity requirement by using conventional solid backfilling mining.