Saeed Farrokhpay Editorial for the Special Issue: “Physical Separation and Enrichment” 

Sunil Kumar Tripathy, Y Rama Murthy, Veerendra Singh, Saeed Farrokhpay and Lev O. Filippov Improving the Quality of Ferruginous Chromite Concentrates Via Physical Separation Methods

Jianwu Zeng, Xiong Tong, Fan Yi and Luzheng Chen Selective Capture of Magnetic Wires to Particles in High Gradient Magnetic Separation

Kwanho Kim and Soobok Jeong Separation of Monazite from Placer Deposit by Magnetic Separation

Yuekan Zhang, Peikun Liu, Lanyue Jiang, Xinghua Yang and Junru Yang Numerical Simulation of Flow Field Characteristics and Separation Performance Test of Multi-Product Hydrocyclone

Геометаллургия – это междисциплинарный подход, играющий ключевую роль в оценке любого проекта или действующего предприятия. Он фокусируется на пространственной характеристике различных типов руд или доменов внутри месторождения, учитывая их влияние на обогащение, производительность добычи, а также экологические аспекты и аспекты рекультивации.

Copper is the first metal which had really played a large part in human history. It is considered that Latin cuprus from which chemical name of copper originated was connected with the island of Cyprus, with the meaning ‘copper island’. But actually it is not so. The Greek word κύπρος has uncertain etymology. For copper the Greeks had a word ϗαλκός; the term “Chalcolithic” goes back to this word. Latin language had another word: aes. The combination aes cyprium meant “Cyprian copper”. Then cyprium was replaced by cuprum. All European words connected with it do not go back to a common Indo-European base. The Latin base is closer to them (Muhly 1973, p. 174, 175). <...>

В книге изложены физико-химические основы методов повышения эффективности и экономичности буровзрывных работ в горных массивах на примере одного из крупнейших золоторудных месторождений Центральной Сибири -Олимпиадинского месторождения (ОМ) Красноярского края. Рассмотрены вопросы повышения эффективности размола горных пород различного состава. Исследованы ключевые физико-механические характеристики горных пород ОМ: твердость, смачиваемость водными растворами электролитов и поверхностно-активных веществ (ПАВ), влияние этих растворов на твердость компонентов породы и прочность их природных композиций. Рассмотрены пути повышения техникоэкономических показателей процессов бурения, разрушения взрывом, дробления и измельчения горных пород ОМ за счет использования в этих процессах в качестве технологических сред водных растворов электролитов и ПАВ. Даны рекомендации для повышения эффективности процессов промышленной разработки горных пород ОМ. Книга представляет интерес для широкого круга читателей, профессионально связанных с добычей и переработкой полезных ископаемых.

Решением XVIII съезда ВКП(б) по докладу тов. В. М. Молотова, о третьем пятилетием плане развития пародпого хозяйства ССОР, поставлена величественная экономическая задача— «догнать и перегнать также и в экономическом отношении наиболее развитые капиталистические етрапы Европы и Соединенные штаты Америки»

Phase diagrams mean more to the metallurgist than mere graphical records of the physical states of matter. They provide a medium of expression and thought that simplifies and makes intelligible the otherwise bewildering pattern of change that takes place as elemental substances are mixed one with another and are heated or cooled, compressed or expanded. They illumine relationships that assist us in our endeavor to exercise control over the behavior of matter. These are no accidental by-products of a system devised primarily for the recording of physical data. They exist because the basic features of construction of all phase diagrams are dictated by a single natural law, the phase rule of J. Willard Gibbs, which relates the physical state of a mixture with the number of substances of which it is composed and with the environmental conditions imposed upon it. <...>

Extractive metallurgy is that branch of metallurgy that deals with ores as raw material and metals as finished products. It is an ancient art that has been transformed into a modem science as a result of developments in chemistry and chemical engineering. The present volume is a collective work of a number of authors in which metals, their history, properties, extraction technology, and most important inorganic compounds and toxicology are systematically described.

Extractive metallurgy is that branch of metallurgy that deals with ores as raw material and metals as finished products. It is an ancient art that has been transformed into a modem science as a result of developments in chemistry and chemical engineering. The present volume is a collective work of a number of authors in which metals, their history', properties, extraction technology, and most important inorganic compounds and toxicology are systematically described.

Extractive metallurgy is that branch of metallurgy that deals with ores as raw material and metals as finished products. It is an ancient art that has been transformed into a modem science as a result of developments in chemistry and chemical engineering. The present volume is a collective work of a number of authors in which metals, their history, properties, extraction technology, and most important inorganic compounds and toxicology are systematically described.

To produce materials from mine to market it is necessary to overcome obstacles that include the force of gravity, the strength of molecular bonds, and technological inefficiencies. These challenges are met by the application of energy to accomplish the work that includes the direct use of electricity, fossil fuel, and manual labor. The tables and analyses presented in this study contain estimates of electricity consumption for the mining and processing of ores, concentrates, intermediate products, and industrial and refined metallic commodities on a kilowatt-hour (kWh) per unit basis, primarily the metric ton (ton) or troy ounce. Data contained in tables pertaining to specific currently operating facilities are static, as the amount of electricity consumed to process or produce a unit of material changes over time for a great number of reasons. Estimates were developed from diverse sources that included feasibility studies, company-produced annual and sustainability reports, conference proceedings, discussions with government and industry experts, journal articles, reference texts, and studies by nongovernmental organizations (NGOs). Suggestions for additions and corrections are welcome by the author. <...>