Mining Science and Technology (Russia)

Description
Activities of the "Mining Science and Technology (Russia)" international journal are aimed at developing international scientific and professional cooperation in the field of mining. Scopus, CAS …(https://mst.misis.ru)
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2 weeks, 5 days ago

How to increase KCl recovery during beneficiation of natural potash ores?

The main source of potassium fertilizers is sylvinite ores consisting primarily of halite (NaCl), silicate and clay-carbonate slurries (clay-salt slurries). Processing of natural potash ores is mainly carried out by the flotation method, which separates KCl, NaCl, and clay-salt slurry. The research is aimed at revealing the effect of sonochemical pretreatment of the depressor reagents, CMC and starch, on dynamic viscosity, aggregate size, electrokinetic potential of these reagent solutions and sylvin flotation performance. Sonochemical pretreatment of sylvin flotation depressors contributes to an increase in KCl recovery and a decrease in the slurry content in the flotation concentrate.

You can learn more about this from the article in our journal:

🔥 Burov V.E., Poilov V.Z., Huang Z., Chernyshev A.V., Kuzminykh K.G. Effect of sonochemical pretreatment of slurry depressors on sylvin flotation performance. Mining Science and Technology (Russia). 2022;7(4):298–309. https://doi.org/10.17073/2500-0632-2022-08-09 🔥

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#inenglish #MST #mining #beneficiation #flotation #ultrasound #depressor #slurry #carboxymethylcellulose #starch #zeta_potential #viscosity #recovery #ore #fertilizer #sylvinite

2 weeks, 5 days ago

Как повысить извлечение KCl при обогащении природных калийных руд?

Основной источник калийных удобрений – сильвинитовые руды, состоящие в том числе из галита (NaCl), силикатных и глинисто-карбонатных шламов (глинисто-солевых шламов). Обогащение природных калийных руд главным образом осуществляется флотационным методом, при котором происходит разделение KCl, NaCl и глинисто-солевых шламов. Исследование направлено на выявление влияния предварительной сонохимической обработки реагентов-депрессоров – КМЦ и крахмала – на динамическую вязкость, размер агрегатов, электрокинетический потенциал растворов этих реагентов и на эффективность сильвиновой флотации. Предварительная сонохимическая обработка депрессоров сильвиновой флотации способствует увеличению извлечения KCl и снижению содержания шламов во флотационном концентрате. Также показана возможность снижения расхода обработанного ультразвуком депрессора.

Более подробно об этом можно узнать из статьи нашего журнала:

🔥 Буров В.Е., Пойлов В.З., Хуан Ч., Чернышев А.В., Кузьминых К.Г. Влияние предварительной сонохимической обработки депрессоров шламов на эффективность сильвиновой флотации. Горные науки и технологии. 2022;7(4):298–309. https://doi.org/10.17073/2500-0632-2022-08-09 🔥

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#нарусскомязыке #ГНиТ #горное_дело #обогащение #флотация, #ультразвук #извлечение #депрессор #шлам #карбоксиметилцеллюлоза #крахмал #дзета_потенциал #вязкость #руда #удобрение #сильвинит

3 weeks, 1 day ago

Can we mine blocks of stone using blast methods while minimizing damage to the stone?

In order to ensure the process of directional fracturing, it is necessary that the pressure of blast products would be greater than the tensile strength of a rock, and, for the preservation of a peripheral rock mass, the pressure of blast products in a blasthole should not exceed the rock compressive strength. These conditions are achieved by selecting rational blasthole spacing and optimal parameters of a blast pulse.

It was established that for the most probable propagation of radial main rupture between blasthole charges during stone block mining it is necessary to use the effect of stress wave interaction.

It should be noted that in order to minimize the zone of induced fracturing, the charge amount should be selected so that the tensile stress field in the plane of the rupture does not exceed the tensile strength. The main rupture propagation begins with the arrival of a rarefaction wave reflected from the surface of the separated stone block.

You can learn more about this from the article in our journal:
🔥 Kovalevsky V.N., Mysin A.V., Sushkova V.I. Theoretical aspects of block stone blasting method. Mining Science and Technology (Russia). 2024;9(2):97-104. https://doi.org/10.17073/2500-0632-2023-12-187 🔥

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#inenglish #MST #mining #stone #blast #block_massive #blast_pulse

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