Environmentally and technologically sulphur is a deleterious constitute in coal which makes it unsuitable for use in metallurgical industries unless the sulphur level can be reduced to the tolerable limit. Characterization of the various forms of sulphur and their associations in coal is an essential issue to find and propose a suitable desulphurization method. In this research, to evaluate sul...

In this research work, the effects of flotation parameters on coking coal flotation combustible material recovery (CMR) were studied by the artificial neural networks (ANNs) method. The input parameters of the network were the pulp solid weight content, pH, collector dosage, frother dosage, conditioning time, flotation retention time, feed ash content, and rotor rotation speed. In order to sele...

Fluorine appears in coal and is released into the atmosphere upon combustion, resulting harmful impacts on environment life, which needs to be removed from before utilization. Coal can processed by flotation gravity separation reduce its fluorine content. In this study, a lignite sample mine Shaanxi Province, China, was characterized using float–sink test, sieving X-ray diffraction (XRD), polar...

Conventional hydrocarbon oil cannot adhere effectively to oxidized coal, resulting in a low yield of clean coal. In this study, high-speed homogenizer was used emulsify LDD (laurylamine dipropylene diamine) and kerosene, which enhanced the flotation efficiency The results showed an increase from 4.12% (only kerosene) 23.33% (emulsified oil). An contact angle indicated that mixture reagent can h...