Development of new compositions for dust control in the mining and mineral transportation industry

Abstract

Dust control in summer and winter periods is a topical problem associated with conducting open pit mining operations; however, at negative temperatures the additional requirements are imposed on dust suppressants. Preventive compositions are proposed, in which light and heavy gas oils, obtained from catalytic cracking and delayed coking, are used as base components. Involvement of heavy fractions allows to increase the flash point, thereby reducing the flammability of dust suppressant, improve its adhesion properties by increasing the content of polyaromatic hydrocarbons and reduce the cost of the final product. In order to improve low-temperature and adsorption properties of developed dust suppressants, heavy oil residues (cracking residue and tar) are included in their composition in various concentrations: 2-10 wt.%. Alternative compositions of dust suppressants, obtained by water emulsification of vinylated alkyd oligomer, are developed; the ability of this dispersion to form strong films on dusty surfaces is examined. The efficiency of using aqueous solution of vinylated alkyd oligomer as a summer dust suppressant is demonstrated. The results of this study include the development of new preventive compositions with improved low-temperature properties and confirmation of the theoretical part of the study by the results of performance tests on a laboratory facility.Alternative compositions of dust suppressors have been developed, which were obtained by emulsifying a vinyl alkyd oligomer (VAO) in water; the ability of this dispersion to form strong films on dusty surfaces has been studied. The efficiency of using an aqueous solution of vinyl alkyd oligomer in the summer period as a dust suppressant is shown. The results of this study are the development of new prophylactic formulations with improved low-temperature properties and confirmation of the theoretical part of the study by the results of tests of operational characteristics in a laboratory facility.

Scientific fundamentals for the use of serpentinized rocks from the eastern region of Cuba

“…Assuming, based on the results of the chemical and mineralogical analyses, a melting temperature between 1750 and 1800°C, which guarantees its use as a refractory material (olivine sands and refractory component). The temperature of the liquid metal in the pouring processes does not generally exceed 1650°C [21].…”

Petroleum coking additive - raw material component for metallurgical coke production. Part 2. Experimental studies of obtaining a petroleum coking additive

“…The aim of this research is formulated as establishment of relation between the main technological parameters of the process of delayed coking [6][7][8] and the same important PCA quality parameters, such as output of volatile substances and group chemical composition (D-, Eand J-fractions), which characterize indirectly their sintering and binding ability during their addition in coal charge in the process of metallurgical coke manufacture [9].…”

Digitalization in Open-Pit Mining: A New Approach in Monitoring and Control of Rock Fragmentation

“…The determination of rock fragmentation is an urgent task for mining enterprises; it is covered in many scientific papers [19,20]. In particular, an article by P.K.…”