diamonds mining process diagram

  • Diamond Processing Flow Chart of Beneficiation

    Diamond Processing Flow Chart #3. With variations it can be used to process 100 to 500 tons per hour of Kimberlite ore and is also arranged to handle weathered or soft ores. For the hard ore as mined the flowsheet follows conventional methods of stage crushing and screening to reduce the ore to —½".

  • How Do Diamonds Form? | They Don't Form From Coal!

    Coal is not a probable carbon source for this diamond-forming process. The most likely carbon sources from the subduction of an oceanic plate are carbonate rocks such as limestone, marble, and dolomite, and possibly particles of plant debris in offshore sediments.

  • Mining and processing - Rio Tinto

    Mining and processing. Over this period of time more than 800 million carats of diamonds were mined. In 2013 a new era of underground mining of the AK1 pit took over to access the pipe at further depth. Block cave mining techniques – where the ore body is undercut, allowing it to break up and 'cave' under its own weight – are now being employed...

  • How Diamond Mines are Formed, How We Find Them, and How .

    Transportation of Diamonds. Kimberlites are usually carrot-shaped, as the lighter rock very close to the surface tends to give way during the eruption process, and the kimberlite explodes outward in all directions. This is why most kimberlites lend themselves well to open-pit mining, often followed by underground mining.

  • Processing Methods | Diamcor Mining Inc.

    Processing Methods. Rotary Pan plants are most often employed when mining alluvial deposits and DMS plants for kimberlite deposits. A primary kimberlite deposit generally has a much longer life-of-mine then an alluvial deposit and due to the nature of the deposit, .

  • Cullinan Diamond Mine, Gauteng - Mining Technology ...

    The open-pit mining at Cullinan diamond mine began in 1903. It is one of the major sources of blue diamonds in the world. Petra Diamonds purchased a 37% stake in the mine from De Beers in 2008. The company increased this to 74% in 2009 by purchasing Al Rajhi's shares.

  • How Diamond Mines are Formed, How We Find Them, and How .

    Transportation of Diamonds. Kimberlites are usually carrot-shaped, as the lighter rock very close to the surface tends to give way during the eruption process, and the kimberlite explodes outward in all directions. This is why most kimberlites lend themselves well to open-pit mining, often followed by underground mining.

  • Alluvial Mining: Gold, Diamonds and Platinum | INN

    Alluvial mining can be a very simple process. For instance, small-scale alluvial mining that's undertaken by individual laborers involves digging and sifting through materials such as mud, sand ...

  • DIAMOND MINING PROCESS |authorSTREAM

    Screening Process : Screening Process Once a mining operation yields ore, the diamonds must be sorted from the other materials. This process relies primarily on diamond's high density. An old but effective method is to use a washing pan, which forces heavy minerals like diamond to .

  • Diamond Manufacturing Process - Stages from Mine to Market

    The Diamond Manufacturing Process For hundreds of years the Diamond has fascinated man for its alluring sparkle and physical hardness exceeding all other gems. Formed about 3 billion years ago beneth the the Earth's crust by extreme heat, it may be the oldest item you will ever own.

  • Digging deeper: Mining methods explained – Anglo American

    Narrow vein stoping [demonstrated in the diagram above] is performed in an underground excavation along geological 'veins' — distinct sheet-like bodies of crystallized minerals within a rock – where the mineral is mined and removed. To support stoping, we also have to make excavations for engine rooms and pump chambers or for access purposes such as shafts, drives, winzes and raises.

  • All-inclusive Facts About the Diamond Mining Process

    Diamond mining is a feat which requires precision, care, heavy duty extraction tools, and a substantial amount of monetary investment in machinery, to extract gems from the depths of the planet's crust. As a process, it consists of locating possible diamond deposits and their retrieval, in intact form.