Abstract. The feasibility of substituting alcohol fermentation wastewater of maize and cassava for water to prepare coal slurries was explored. The rheological and stability properties of coal alcohol fermentation wastewater slurries were studied and compared with that of coal water slurry.

@article{osti_6162582, title = {Coal-water slurry and method for its preparation}, author = {Funk, J E}, abstractNote = {A pipeline pumpable coal-water slurry having a novel combination of coal particles and carrier water is prepared by a method wherein the particle sizes and their distribution are controlled in accordance with a particle size distribution …

Coal-water slurry (CWS), a mixture of pulverized coal, water, and additives, is a clean liquid coal-based fuel for gasification. Superhydrophobic surface modification using a secondary particle-second liquid system is an effective CWS preparation method.

Slurry pumps in coal preparation. Save to read list Published by Jonathan Rowland, Editor World Coal, Friday, 06 March 2015 15:15. Advertisement. Mike Bjorkman, BJM Corp., USA. The challenge. As much as 50% of the material that comes out the ground during coal mining is waste: dirt, rocks and other impurities that must be removed from …

Liquid carbon dioxide has been suggested as an alternative to water for the preparation of coal slurry in plants with carbon capture [1-4]. An up to 12%-point higher gasifier cold gas efficiency has been estimated for coal-CO 2 slurry-fed systems as a result of the lower heat capacity and enthalpy of

Preparation of high concentration coal water slurry with good fluidity based on only modified fine particles under bimodal distribution using the second fluid and the second particle ... Synthesis of a novel dispersant with topological structure by using humic acid as raw material and its application in coal water slurry preparation. Fuel, 262 ...

Coal coking technology produces a large amount of refractory wastewater and sludge with complex components and low biodegradability. The coking wastes prepared as coal slurry, which is then used ...

The coal slurry preparation process involves the transport of the coal stored in the raw coal bunker V1101 to the coal mill M1101 through the coal weighing feeder W1101 for coal grinding, and the conveyance of the additive stored in the additive underground tank to the coal mill M1101 through the additive feeding pump P1203. At …

The present study investigates head loss for flow of coal-water slurry inside 90º pipe bend. The experiments were conducted with slurries of different solid concentrations, varying from 31.4–60 ...

Abstract The feasibility of substituting alcohol fermentation wastewater of maize and cassava for water to prepare coal slurries was explored. The rheological and stability properties of coal alcohol fermentation wastewater slurries were studied and compared with that of coal water slurry. The results showed that both coal maize and …

That slurry also came from a coal preparation plant. There are nearly 600 slurry impoundments in the U.S., many of them concentrated in the coal-mining territories of Appalachia. Local activists in West ia argue that these impoundments pose a huge danger to surrounding communities due to the chemical composition of these lakes of …

The clarification of recycled water can influence the coal preparation processes such as slurry thickening and dewatering. In this regard, different types of synthetic flocculants and coagulants are used widely to increase the efficiency of the process and improve the clarification of water. The appropriate selection of flocculants in CPPs is ...

Materials. Coal tailing (CT) and coal slurry (CS) were collected from a coal beneficiation plant in Mpumalanga, South Africa, for use in this study (Fig. 1).Before use, the samples were kept in an ...

Dispersants, serving as an essential raw material in the formulation of coal water slurry, offer an economical and convenient solution for enhancing slurry concentration, thus stimulating significant …

a highly-concentrated coal-water slurry. Preparation of a slurry usually involves crushing and grinding of the solids, perhaps some cleaning and sorting, all followed by a mixing of the solids with water, crushing and grinding are expensive. Therefore, reduction in particle size should be minimized wherever possible. Figure 1 shows a typical ...

Coal water slurry (CWS), a novel type of coal-based clean fluidized fuel, is usually composed of 60–75 wt% pulverized coal, 24–39 wt% water, and approximately 1 wt% dispersants [1], [2], [3]. During ... A typical produce for preparation of CWS is described as follows: 80 g blended coal powder was added slowly to a plastic beaker …

Coal sludge, also known as slurry, is the liquid coal waste produced by mining activities. After mining, coal is crushed and washed to remove the surrounding soil and rock. The washing process generates huge amounts of liquid waste, and the mining process itself produces millions of tons of solid waste. ... Each year coal preparation …

The main purpose in this study was to understand the interactions of coal particles with three amphiphilic humic acid-based polymers, which were designed and synthesized through the copolymerization of humic acid (HA) with maleic anhydride-polyethylene glycol 400 monoester, methacrylatoethyl trimethyl ammonium chloride or …

Preparation of CWS Samples: – 55 kg of two-component CWS containing 50 wt.% of coal and 50 wt.% of water was prepared; – the obtained slurry was divided into samples of equal weight; – one CWS sample was left as two-component, PL was added to the other CWS samples (Nos. 1, 2,3, 4, and 5) in quantities of 1-10 wt.%.

Coal slurry is first prepared by crushing the coal to a size of 0.2 mm particle diameter along with water addition. The coal slurry is the pumped to the gasifier where the reactions take place in the controlled amount of oxygen. The gasifier effluent contains a mixture of gaseous products including CO, H 2, CO 2, H 2 O, Ar, H 2 S and minor quantities of …

Coal slurry is an essential component of mining operations, accounting for more than half of operating costs. Dewatering technology is simultaneously confronted with obstacles and possibilities ...

In coal preparation plants, the run-off-mine coal endures a series of wet operations, including washing, screening and sedimentation for dewatering. Coal …

Coal slurry is first prepared by crushing the coal to a size of 0.2 mm particle diameter along with water addition. The coal slurry is the pumped to the gasifier where the reactions …

The coal slurry preparation process involves the transport of the coal stored in the raw coal bunker V1101 to the coal mill M1101 through the coal weighing …

DOI: 10.1016/J.ENERGY.2018.11.141 Corpus ID: 117458912; Energy utilization of coal-coking wastes via coal slurry preparation: The characteristics of slurrying, combustion, and pollutant emission

ABSTRACT. The Ant Colony Optimization algorithm is one of the leading optimization algorithms for nondeterministic polynomial hard problems. The aim of the present work is to find the maximum power of the agitator and selection of the motor power load for agitation equipment by assuming 80% of the maximum power of the agitator for preparation of …

In this paper, we prepared a slurry with various dispersants for ammonium-forming wastewater, desulfurization wastewater, pharmaceutical manufacturing …

The present article describes a method of preparation coal-water slurry using a high speed mixer-disperser (HSMD).The method is based on the multiple impacts in a liquid media by dispersing elements in the appearance of cavitation effects. Considering the design features of a high-speed mixer-disperser it was found that the processing of coal ...

In order to strengthen the safety management of coal slurry preparation systems, a dynamic risk assessment method was established by using the bow-tie (BT) model and the Structure-variable Dynamic Bayesian Network (SVDBN). First, the BT model was transformed into a static Bayesian network (BN) model …

Preparation of coal-water slurry using high-concentration inorganic saline wastewater containing microplastics — A slurry performance and particle interaction analysis. ...