Separation is the main step of ore concentration. Metal recovery and productivity largely depend on the separation process and methods. Based on the physical and chemical properties of ore like its grain size, shape, color, density, friction coefficient, magnetism, moisture and electric property, several process and methods are available.

Metalcess provides the commonly-used separation methods for raw ore from sorting, gravity separation, flotation, magnetic separation to electric separation. These methods are mainly applied for raw ore such as copper sulfide ore, copper oxide ore, lead-zinc sulfide ore, lead-zinc oxide ore, copper-zinc sulfide ore, copper-lead-zinc sulfide ore, copper-nickel sulfide ore, copper-molybdenum ore, zinc oxide ore and silver-gold bearing ore, etc.

Nevertheless, Metalcess caters for material separation. For further treatment of refractory ore, ore tailing, smelting slag, refining dross, leaching residue, goethite residue, jarosite residue, fume dust and recycle of WEEE, spent lead acid battery, lithium battery, copper scrap, zinc scrap, automobile scrap and other metal scraps, a series of advanced technologies are adopted including magnetization roasting, flash magnetization roasting, biological floatation, chemical leaching and bio-leaching. These are patented know-how specialized for increasing metal recovery rate and eliminating environment impact of hazardous wastes.

With a view to sustainable development, we provides environment-friendly process and reliable equipment to maximize the metal recovery and minimize production cost for both ore concentration and tailing/dross /scrap recovery. 

Metalcess is a solution provider from ore test, process design and engineering, equipment selection and supply.  Major separation methods are listed as follows:

1.    Sorting: a separation method using the optical and radiation method of the material, manual sorting is often applied for high grade raw ore.

2.    Gravity separation: materials in media like water, air, etc. the material moves or precipitates in the media at different speed due to its different density.

3.    Flotation: in the suspension liquid mixed with reagent, the material shows characteristics of being hydrophilic or hydrophobic, and the hydrophobic material attached to the rising bubble in the flotation cell to the cell surface, thus being separated from the gangues.

4.    Magnetic separation: ore separation by magnetism differential.

5.    Electric separation: the conductive material are separated from non-conductive material in an environment of high intensity static electricity. 

6.   Flash magnetization roasting: specialized for weak-magnetic or non-magnetic material like leaching iron residue, goethite residue, jarosite residue, hematite and hematite residue, limonite, siderite, etc. By quick heat transfer of materials in the fluidized state, magnetization roasting increase the material’s magnetism and make it suitable for magnetic separation.

7.   Biological flotation: using bacteria to change the physical and chemical property of material to make it suitable for flotation to get valuable minerals.