In 2000, we adopted the Csx type magnetic field screening machine (hereinafter referred to as magnetic screen), in November 2004 and dated 25-12 25, it received industrial test on the basis of the small-scale test site. Using three sections of caving, Second fine sieve, Second screening in magnetic mine shunt handling process, namely Sec period magnetic grinding of fine screening closed-circuit screen, using 0 12 mm square mesh, put crude for some fine sieve under the product particle size. If you are not convinced, visit Bernard Golden. For some fine sieve, sieve roughing products by the first paragraph of the magnetic separation of the three sections of the ball mill and 2 of a fine sieve to constitute to closed-circuit operations difficult ordeal selected poor even born people into the ore handling system, the rough concentrate. Second fine sieve into the Sec products magnetic screen selection. Industry experiment have researched the effects of five types of ore sorting.
The test proved when the magnetic processing the Sec screen sieve product, it is easy to choose the Owers of iron concentrate grade up to 66.00%, magnetic screening is elected by a large number of poor with the living body as mine, mine grade is 19.00 to 23.00% %. Magnetic screen to deal with the three sections under the screen, the concentrate grade over the same period the production of high concentrate grade is 2 5-3.1 percentage points, several types of ore concentrate grade dog reach 65. 00%. Plate flotation column cross-section shapes round, square or round top. the ore slurry is conveyed from the upper Tube evenly into the flotation column. The compressed air is filled column by the inflatable chambers of the cylinder bottom through the vertical set of air tube. The formation of a large number of small bubbles evenly distributed throughout the section, pulp declined slowly under gravity, bubbles rising slowly from bottom to top, useful minerals in the column to be selected with the pulp constantly meet.
due to the role of agents, Convection is selected minerals attached to rising bubbles, on the surface of the cylinder upper part of the formation of mineralized foam layer, scraped by the scraper into or from the overflow into the concentrate tank, the remaining minerals (In general, or gangue minerals non-selected) discharged from the cylinder lower part of the cone at the end of the dam discharge pipe. Swirl to static microbubble flotation column characteristics: mineral Magnetite Gongchangling fine-fine-grained disseminated, and the distribution is uneven, in the magnetic separation process, to further improve the magnetic and mechanical mixture serious problems, resulting in the gangue mixed concentrate, affecting the s concentrate grade. Swirl to static micro bubble column sorting features is different from the conventional flotation column, the use of saturated dissolved gas precipitation and efficient jet into the bubble formation of micro bubbles, and mixed packing and sieve filling, which constitute the column body static separation of the environment; and form the re-election, flotation combination to form a comprehensive multi-cycle force field and improved sorting chain, resulting in the improvement of separation efficiency.
