coal gangue cement production

  • Home
  • >
  • coal gangue cement production

Effects of Coal Gangue on Cement Grouting Material ...

The coal gangue is one of the most abundant industrial solid wastes and pollute source of air and water. The use of coal gangue in the production of cement grouting material comforms to the basic state policy of environment protection and the circular using of natural resources. Through coal gangue processing experiment, coal gangue cement grouting materials making test, properties detection ...

More

Properties of coal gangue-Portland cement mixture with ...

Jun 01, 2019  1. Introduction. Besides oil and natural gas, coal as a fossil fuel has become one of the primary sources of energy for modern civilization .As an industrial solid waste, coal gangue is discharged when coal is excavated and washed in the production procedure , .The average emission of coal gangue is about 15% of total coal production .The annual emission of coal gangue in China has

More

Enhanced mechanical properties and durability of coal ...

Sep 10, 2019  Coal gangue, produced from the coal industry, is a clay rock generated in large quantities and posing severe environmental pollution. As a common solid waste ( Tang et al., 2019 ), coal gangue is known to have coal-bearing metakaolin or coal-metakaolin.

More

What is Coal Gangue - sandmakingmachinelz

What is Coal Gangue ? 2017-01-06. Brief introduction; It is a solid waste in the process of coal mining and clean coal production. It has been used in power generation, cement production, brick making, chemical products production, soil improvement, etc.

More

Reactivity activation of waste coal gangue and its impact ...

Feb 20, 2020  In the construction field, coal gangue has also been used to make bricks, concrete blocks, mosaics, fired-glazed floor tiles, lightweight aggregate and other low value-added building materials , , .At present, coal gangue can partly or completely replace clay for aluminum adjustment in cement clinker production , . In fact, the major concern of using coal gangue in concrete is its poor ...

More

Recycling Coal Gangue as Raw Material for Portland Cement ...

The utilization of calcium raw materials other than calcium carbonate can reduce the Raw material CO 2 of cement industry [57,58]; red mud, tailing and coal gangue can be used as silicate and ...

More

A concrete material with waste coal gangue and fly ash ...

Currently, the coal gangue is mainly recycled and utilized for power generation, agricultural fertilizer, highway roadbeds, brick production, cement production and concrete production (Li et al ...

More

Life Cycle Assessment of Cement Clinker Production Using ...

Life cycle assessment (LCA) was carried out to quantify and analyze the environmental impact and benefit caused by the utilization of coal gangue as alternative raw material and fuel in cement clinker production. The optimal dosage of coal gangue was determined by comparing among different mixing amount scenarios and Portland cement clinker (clinker without adding any waste) considering the ...

More

Utilization of coal gangue as coarse aggregates in ...

Jan 25, 2021  In China, coal gangue accounting for 1/10, even 1/5 of coal production, is one of the major industrial and mineral residues. The stock of coal gangue in China has reached a billion level, with an increasing rate of 150–200 million per year , . How to utilize the stacked coal gangue is a serious topic in mining industry and construction industry.

More

Effects of Coal Gangue on Cement Grouting Material ...

The coal gangue is one of the most abundant industrial solid wastes and pollute source of air and water. The use of coal gangue in the production of cement grouting material comforms to the basic state policy of environment protection and the circular using of natural resources. Through coal gangue processing experiment, coal gangue cement grouting materials making test, properties detection ...

More

Performance of cemented coal gangue backfill

15%−20% of coal production in the same year. It is reported that coal gangue makes up 25% of total waste materials with total amount of 7 Gt and occupation area ... to determine optimal contents of gangue, cement and fly ash, and to clarify strength features and dewatering proportion. The results are listed in Table 5. The

More

CN104529332A - Method for preparing coal gangue-cement ...

The invention relates to a method for preparing a coal gangue-cement mortar test block by taking composite chemi-excitation coal gangue as a raw material. The coal gangue-cement mortar test block comprises the following raw materials by weight percent: cement clinker, coal gangue powder, anhydrous sodium sulfate, sodium silicate, quicklime, gypsum, standard sand and water.

More

Life Cycle Assessment of Cement Clinker Production Using ...

Life cycle assessment (LCA) was carried out to quantify and analyze the environmental impact and benefit caused by the utilization of coal gangue as alternative raw material and fuel in cement clinker production. The optimal dosage of coal gangue was determined by comparing among different mixing amount scenarios and Portland cement clinker (clinker without adding any waste) considering the ...

More

Incorporation of self-ignited coal gangue in steam cured ...

The pozzolanic reactivity, cement hydration, mechanical and durability-related properties of cement-based materials blended with activated coal gangue are further discussed.

More

Preparation of Coal Gangue Cement Mortar Scientific.Net

Many researches on coal gangue are aimed at increasing its activity by many methods together such as thermal, mechanical and chemical. The methods are so complex that they are difficult to be adopted by some companies. In this paper, considering the low-strength requirement of cement mortar, the activity of coal gangue is more evidently shown by Ca(OH)2 activator.

More

Integrated Utilization of Sewage Sludge and Coal Gangue ...

Apr 07, 2016  During the calcinations, most of trace elements could be immobilized especially Zn and cannot be easily leached out. Given the encouraging results in the present study, the co-process of sewage sludge and coal gangue in the cement kiln can be expected with a higher quality of cement products and minimum pollution to the environment.

More

Recycling Coal Gangue as Raw Material for Portland Cement ...

Coal gangue (CG) is one of industrial solid wastes with biggest discharging. The disposal of such a large quantity of this solid waste requires lots of land and many serious environmental problems have been occurred. In this paper, CG as one of cement raw materials, and production experiments were performed in a 5000t-d-1 dry process rotary kiln to calcinations Portland cement clinker.

More

Effects of surface-activated coal gangue aggregates on ...

Dec 12, 2013  Effects of calcined coal gangue (CG) aggregates treated by the surface thermal activation on the flowability and strength, and paste-CG aggregate interfaces of the cement-based material were investigated. The experimental results show that the compressive and flexural strength of the cement-based material with the calcined CG aggregates is much higher than that of the material

More

(PDF) Integrated Utilization of Sewage Sludge and Coal ...

Apr 07, 2016  The present study firstly proposed a method of integrated utilization of sewage sludge (SS) and coal gangue (CG), two waste products, for cement clinker products with the aim of

More

PAPER OPEN ACCESS Effects and mechanisms of slag ...

Apr 04, 2020  20% coal gangue into red mud to prepare high-strength red mud-coal gangue geopolymers but did not determine its optimal application parameters. Zhang [12] mixed 30% coal gangue into cement and found that the main hydration products of burned coal gangue-cement were C-S-H, C-A-H, CH, and AFM. Zhang . et al.

More

Emission Factors of NO , SO2, and PM for Bathing, Heating ...

China has the largest cement production in world and accounts for 60% the total world production in 2012 due to its fast urbanization (Chen et al., 2015a). The total coal and electricity consumptions of Chinese cement industry in 2009 were 1.87 × 108 t and 1.38 × 109 kWh, resulted in the emission of 8.9 × 105 t of SO 2, 1.69 × 10 6 t of NO ...

More

Integrated Utilization of Sewage Sludge and Coal Gangue ...

Coal gangue, as one of the common industrial wastes, is one of the main byproduct from coalmining and beneficiation and accounts for about 15–20 wt % of coal production [5–7].

More

Coal for cement: Present and future trends

Mar 01, 2016  Note: Countries that feature in the top 10 for both cement and coal production are highlighted in purple. * = Data for 2013. ** = Data for 2012. Global coal consumption fell by 0.88% year-on-year to 5.54Bnt in 2014 (Table 3). The top 10 coal consuming countries consumed 4.81Bnt of coal during the year, or 86.8% of global consumption volumes.

More

Performance of cemented coal gangue backfill

15%−20% of coal production in the same year. It is reported that coal gangue makes up 25% of total waste materials with total amount of 7 Gt and occupation area ... to determine optimal contents of gangue, cement and fly ash, and to clarify strength features and dewatering proportion. The results are listed in Table 5. The

More

Incorporation of self-ignited coal gangue in steam cured ...

The pozzolanic reactivity, cement hydration, mechanical and durability-related properties of cement-based materials blended with activated coal gangue are further discussed.

More

Preparation of Coal Gangue Cement Mortar Scientific.Net

Many researches on coal gangue are aimed at increasing its activity by many methods together such as thermal, mechanical and chemical. The methods are so complex that they are difficult to be adopted by some companies. In this paper, considering the low-strength requirement of cement mortar, the activity of coal gangue is more evidently shown by Ca(OH)2 activator.

More

CN104529332A - Method for preparing coal gangue-cement ...

The invention relates to a method for preparing a coal gangue-cement mortar test block by taking composite chemi-excitation coal gangue as a raw material. The coal gangue-cement mortar test block comprises the following raw materials by weight percent: cement clinker, coal gangue powder, anhydrous sodium sulfate, sodium silicate, quicklime, gypsum, standard sand and water.

More

Coal in the cement industry

Coal in the cement industry Cement manufacturing consists of raw meal grinding, blending, pre calcining, clinker burning and cement grinding. Limestone, CaO, SiO2, Al2O3 and Fe2O3 are crushed and milled into a raw meal. This is blended and preheated in a preheater cyclone.

More

Recycling Coal Gangue as Raw Material for Portland Cement ...

Coal gangue (CG) is one of industrial solid wastes with biggest discharging. The disposal of such a large quantity of this solid waste requires lots of land and many serious environmental problems have been occurred. In this paper, CG as one of cement raw materials, and production experiments were performed in a 5000t-d-1 dry process rotary kiln to calcinations Portland cement clinker.

More

PAPER OPEN ACCESS Effects and mechanisms of slag ...

Apr 04, 2020  20% coal gangue into red mud to prepare high-strength red mud-coal gangue geopolymers but did not determine its optimal application parameters. Zhang [12] mixed 30% coal gangue into cement and found that the main hydration products of burned coal gangue-cement were C-S-H, C-A-H, CH, and AFM. Zhang . et al.

More

(PDF) Integrated Utilization of Sewage Sludge and Coal ...

Apr 07, 2016  The present study firstly proposed a method of integrated utilization of sewage sludge (SS) and coal gangue (CG), two waste products, for cement clinker products with the aim of

More

China Coal Gangue, Coal Gangue Manufacturers, Suppliers ...

China Coal Gangue manufacturers - Select 2021 high quality Coal Gangue products in best price from certified Chinese Block Making Machine, Block Machine suppliers, wholesalers and factory on Made-in

More

Effects of Corn Stalk Fly Ash (CSFA) on the Mechanical and ...

To reduce the amount of cement used in cemented coal gangue backfill (CCGB, a mixture of coal gangue, cement, fly ash, and water), mechanical and deformation properties of CCGB in which CSFA partially replaces the cement (0, 10, 20, 30, and 40 wt%) were studied. Compressive strength, acoustic emission during uniaxial loading, shear strength, and drying shrinkage were analysed.

More

Coal for cement: Present and future trends

Mar 01, 2016  Note: Countries that feature in the top 10 for both cement and coal production are highlighted in purple. * = Data for 2013. ** = Data for 2012. Global coal consumption fell by 0.88% year-on-year to 5.54Bnt in 2014 (Table 3). The top 10 coal consuming countries consumed 4.81Bnt of coal during the year, or 86.8% of global consumption volumes.

More

Integrated Utilization of Sewage Sludge and Coal Gangue ...

Coal gangue, as one of the common industrial wastes, is one of the main byproduct from coalmining and beneficiation and accounts for about 15–20 wt % of coal production [5–7].

More

Utilization of coal gangue for the production of brick ...

Jun 08, 2016  Coal gangue, an industrial solid waste discarded from coal mining and processing, was used as the sole raw material to prepare brick. The coal gangue was crushed, homogenized, milled and then pressed into green compacts. The dried compacts were sintered at different temperatures for 2 h. The obtained brick samples were characterized with X-ray diffraction, scanning electron microscopy,

More

Integrated Utilization of Sewage Sludge and Coal Gangue ...

The present study firstly proposed a method of integrated utilization of sewage sludge (SS) and coal gangue (CG), two waste products, for cement clinker products with the aim of heat recovery and environment protection. The results demonstrated that the incremental amounts of SS and CG addition was favorable for the formation of tricalcium silicate (C3S) during the calcinations, but excess ...

More