About us

Lorem Ipsum is simply dummy text of the printing and typesetting industry.

Shanghai SKM Mining Engineering Machinery Co., Ltd. is a company integrating advanced technology and R&D. We have always focused on the research, development and production of industrial crushing, milling equipment and other related auxiliary equipment. Our products have been exported to more than 120 countries and regions such as Southeast Asia, Eastern Europe, South America, Middle East and Africa. In the future development, we will open up a wider overseas market.

We always take the "high-tech and high-quality pursuit of SKM mode" as the solid concept of enterprise management. Through the continuous introduction of leading-level crushing and grinding technology, advanced management and management concepts and good quality control system, as well as our innovation and efforts, our company has established a good reputation among our customers.

Email: [email protected]

Geometallurgy of Australian uranium deposits

The most common uranium ore minerals encountered during ore processing are primary, ... Radioactivity: Radiometric sorting ... Geometallurgy of Australian uranium deposits. Based on the above classification of, ore classification, the geometallurgical characteristics that affect processing, and the distribution and importance of specific ...

Get price

Uraninite: A radioactive mineral and ore of uranium

Uraninite, also known as pitchblende, is a radioactive mineral and the most important ore of uranium. We have uraninite photos, physical properties, and information about geologic occurrence, alteration products, and the role of uraninite in the discovery of radioactivity.

Get price

Mining Waste | Special Wastes | Wastes | US EPA

Octo—EPA proposes in the Federal Register (50 FR 40292) to reinterpret the scope of the mining waste exclusion as it applies to mineral and ore processing wastes, leaving only large-volume processing wastes excluded. Other mineral and ore processing wastes that are hazardous would be subject to full RCRA Subtitle C (hazardous waste ...

Get price

Uranium Mining Overview

Uranium minerals are always associated with more radioactive elements such as radium and radon in the ore which arise from the radioactive decay of uranium over a few million of years. Therefore, although uranium itself is barely radioactive, the ore which is mined, especially if it is very high-grade such as in some Canadian mines, is handled ...

Get price

Just How Radioactive is Uranium Ore? | TalkNuclear

So, just how radioactive is uranium ore? And, how does it compare to other naturally occurring radioactive substances we are exposed to on a daily basis? Say, bananas for instance. Well, a handful of raw uranium ore actually has about as much radiation as 10 bananas – a “bunch” that is. But, how could that be? It’s simple really.

Get price

Electronic Ore Sorting Copper Ore

The electronic ore-sorting test program consisted of plant-scale sorting and lab sorting. Plant sorting was done to determine the sortability of different native copper ores and the efficiency of the electronic ore sorters. Tests were run at the sorting plant owned by Minerals Recovery Corp. (MRC) in Painesdale, Mich.

Get price

Radioactivity in Selected Mineral Extraction Industries ...

Most common copper minerals have been observed with uraninite ore types. Uranium minerals are also commonly associated with those containing cobalt which is an important geochemical indicator, particularly for the Ni-Co-Ag uranium ore type (McKelvey et al., 1955). Lead is the next metal in abundance in uranium deposits.

Get price

What Is Pitchblende? (Uraninite)

What is pitchblende and what does it have to do with uranium? Pitchblende, also known by the name uraninite, is a mineral comprised mainly of oxides of the element uranium, UO 2, and UO 3. It is the primary ore of uranium. The mineral is black in color, like 'pitch'. The term 'blende' came from the German miners who believed it contained many ...

Get price

Uraninite

Uraninite, formerly pitchblende, is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO 2, but due to oxidation the mineral typically contains variable proportions of U 3 O 8. Additionally, due to radioactive decay, the ore also contains oxides of lead and trace amounts of helium.

Get price

US9290913B2

An alternative treatment, prior to conventional methods described, is ore sorting, where gangue material is detected by means of electronic sensors and removed from the value-bearing mineral ore at coarse particle sizes by physical means. Currently, there are various methods of sorting ore.

Get price

TENORM: Copper Mining and Production Wastes | Radiation ...

Minerals are concentrated in specific types of geologic formations (ore bodies), which are where mining takes place. These ore bodies may already contain naturally-occurring radioactive materials (NORM). The most frequently-occurring radionuclides (and their decay products) found in copper ore include: Uranium; Radium

Get price

Uranium Ore Minerals

The uranium content of a mineral does not of itself, however, determine whether it is a uranium ore mineral. If the uranium is present in a mineral in such complex combinations with other elements that it is too costly to extract, or if the mineral does not occur in sufficient quantities to make extraction worthwhile, that mineral is not a ...

Get price

Mineral Gallery: Radioactive Minerals

Naturally radioactive minerals are not very radioactive! This is because they are formed from naturally occurring radioactive isotopes which, by necessity, have extremely long lifetimes - comparable or greater than the age of the Earth itself. The radioactivity of an isotope is strongly dependent upon its half-life.

Get price

Industrial Mineral Sorting : TOMRA

Industrial Mineral Sorting Major mining companies use sensor-based sorting equipment for industrial mineral processes. The technology separates ore from gangue – unwanted material – on a rock-by-rock basis, delivering reduced dilution, lower strip ratios and transport costs, removed contaminants and optimized process flows. ...

Get price

Ore Sorting Machine & Equipment

Ore Sorting Machine is sensor-based ore sorting equipment use X-ray, NIR, Laser and other optical color sorting technology to separation ore, mine, minerals, stone and sand etc.

Get price

Use ore sorting equipment to concentrate ores and cut ...

Optical sorting and lasers are very well suited to the detection of ores with different colours, such as copper oxide, or crystalline structures in quartz. By using ore sorting equipment, ore concentrates can be created at very low cost in small or remote mining installations.

Get price

Mining Waste | Special Wastes | Wastes | US EPA

Octo—EPA proposes in the Federal Register (50 FR 40292) to reinterpret the scope of the mining waste exclusion as it applies to mineral and ore processing wastes, leaving only large-volume processing wastes excluded. Other mineral and ore processing wastes that are hazardous would be subject to full RCRA Subtitle C (hazardous waste ...

Get price

Mineral processing | metallurgy | Britannica.com

Mineral processing: Mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of …

Get price

Which of the following mineral types can you use ...

 · Radioactive minerals are the type of minerals that you can use radiometric dating on. Radioactive minerals are minerals that contain naturally occurring radioactive elements (such as uranium and thorium) in their structure. Radioactive elements are elements that are composed of emitting alpha, beta, and gamma rays and disintegrating nuclei.

Get price

Ore sorting and pre-concentration

 · This is exacerbated as ores get more complex, e.g. harder to break, smaller mineral grain sizes and more intergrown mineral textures. Ore sorting and pre-concentration may help profitably tackle these challenges. Modern ore sorting relies on sensors to detect properties of particles, and based on readings, respond with a control action.

Get price

Uranium ore | Wiki | Everipedia

Uranium ore's wiki: Uranium ore deposits are economically recoverable concentrations of uranium within the Earth's crust. Uranium is one of the more common elements in the Earth's crust, being 40 times more common than silver and 500 times more common than gold. It can be found almost everywhere in rock, soil, rivers, and oceans. The challenge is to find those areas where the …

Get price

Uranium ore

The primary uranium ore mineral is uraninite (UO 2) (previously known as pitchblende). A range of other uranium minerals can be found in various deposits. These include carnotite, tyuyamunite, torbernite and autunite. The davidite-brannerite-absite type uranium titanates, and the euxenite-fergusonite-samarskite group are other uranium minerals.

Get price

How dangerous is it to have a lump of uranium ore in a room?

 · Natural uranium sitting on a shelf, in the form of an ore no less, is not a hazard. Can you get readings of radioactivity on a Geiger-Mueller detector? Yes, of course. Is the level of radioactivity, even if you are directly handling it under norma...

Get price

Ore sorting

The ore sorting effect. Some of the most impressive ore sorting case studies have come out of the diamond industry – a sector where the ability to pick up a plus ct rough before it enters the crushing stage can be the difference between profit and loss.

Get price

Geology Test 3 Flashcards | Quizlet

Geology Test 3. STUDY. PLAY. ... If a rock sample contains 23% of a radioactive isotope relative to its stable daughter, what can be said about the age of the rock if the half-life for this isotope is 125 million years? ... Term for minerals of little value that are associated with the ore minerals…

Get price

Developments in Ore Sorting Technologies

Developments in Ore Sorting Technologies 5 June 2009 Carl Bergmann Specialist: Research ... Uranium Coal Gold Platinum Sensor based sorting applications. 5 1 Material feed 2 Vibratory feeder 3 Free fall acceleration ... sorting. For other silicate minerals, the current top size that the X-

Get price

Automatic Sorting of Minerals

The present paper discusses some tech­nological bottlenecks in automatic sorting applied to mineral and environmental processing and how these may be overcome by new developments in sensor, data-processing and actuator technology. Some re­sults from recent investigations into coal, ore and building waste sorting are presented.

Get price

Storage of Radioactive Minerals | Storage Techniques for ...

Storage of Radioactive Minerals. Purpose. Because mineral specimens containing radioactive elements are naturally occurring substances and are collected in small quantities, there are no official licensing requirements for their possession and storage. However, the Environmental Protection Agency (EPA) does provide recommendations on acceptable ...

Get price

Mineral sorting

Colour recognition for industrial minerals, gemstones, base and precious metal ores. Near Infrared (NIR) Mineral recognition by individual NIR spectrum: Multi-Sensor 1 + 2: NIR spectrum and colour recognition of the minerals in only one system: X-Ray Fluorescence: Mineral and ore recognition by element distributions and their own fluorescence ...

Get price

US5236092A

In a method of X-radiation sorting of raw materials, after the stock lumps have been spread in monolayer on the transporting surface and stabilized, they are brought into the mode of unsupported movement along the stabilized paths without rotation. The exposure of the lumps to X-radiation, the measurement of the secondary radiation from the lumps, and the selection thereof are all carried out ...

Get price