So far, the world's medium-speed milling machines are dry law. Hot air
carrier that is, separation, sorting products. Therefore in need of a massive
and complicated: medium heat generator, fans, vents Central, separator ,
explosion-proof system (inert gas source), dedusting system, sealing measures
and it is difficult to adapt to the high moisture materials, a fine-grained
access-class products in the high temperature operating equipment damage and
fast, and the situation difficult to control; complete machine too tall.
principle but because of movement determined by the grinding efficiency, and in
electricity, the cement industry in the milling system is widely used, but no
First, wet operations. Therefore, the principle of movement determined by the
grinding efficiency has not been fully exploited.
2 and the Mill Although conventional campaign decided by the principle of
grinding mill less than the speed, but the wet process is significantly higher
than that of dry. Normally, the same conditions wet process Bian Process 30%
Because wet (water) by grinding effect, and water is the
simplest, cheapest, "aids." Its will to a large extent influence the
fragmentation of materials. Adsorbing water because of the solid surface (the
activity of a molecule), the surface free energy and the elastic deformation can
be reduced, resulting in the weakening bond together to promote and accelerate
the materials crack formation and expansion, the reduction of the strength of
the materials -- -- This is the famous "out Binchaer effect."
Wet operations for the period to achieve fineness, it can improve product yield,
or yield to achieve period, the fracture particles can promote products mill
will be more detailed.
3 envisaged, if the mill rate to avoid the disadvantages, while retaining the
principle of movement in the rate decisions of the mill grinding efficiency at
the same time allow a Wet Ball Mill with
water transmission and other election materials and the simplicity of the wet
efficient. designed to speed in the wet mill. its effect should be
complementary. be wet grinding technology to meet a variety of needs: FGD
desulfurization agents such as power plants, coal slurry preparation; while
achieving energy conservation, efficiency, energy, environmental protection
simple, reliable, the purpose of applicability stronger. This is the speed in
the wet grinding birth of the technical background. Get Ceramic Ball Mill,Ball Mill,Beneficiation From http://www.ceramic-ball-mill.com
Direct Preferential Flotation
Definition of this method is: separate various helpful minerals in proper order. With its feature of high flexibility, it can adapt the change of ore grade, especially for sulphide ore of high grade. Xilin, Fankou, Lechang lead-zinc dressing plant of our country, and Laisvall lead-zinc dressing plant of Sweden all adopt this method.
Combined Flotation Flowsheet
Firstly, get mixed concentrate through the emersion of all useful minerals in ores; secondly, separate various helpful minerals in sequence from mixed concentrate. These two steps together are called part of amalgamate flotation Flowsheet. This process is suitable for treat raw ores of complex structure, fine embedded grains, and low content of sulfide mineral, which are in close symbiosis relationship. Because this process can simplify process, reduce ores’ over grinding, so as to benefit separation. Almarc Lead-zinc plant of former Soviet Union adopts preferential flotation this process. By using this process, we can get higher index than preferential flotation improve 10% of lead concentrate ore grade and 4.5% of zinc concentrate ore grade, raise the rate of multipurpose utilization from 75.4% to 83.7%, and double labor productivity. Qingchengzi zinc-lead ore dressing plant and Xiaotieshan copper ore dressing plant of our country adopt this process.
Part of Amalgamate Flotation Flowsheet
We can get mixed concentrate by the emersion of two useful minerals in ores together, then separate single concentrate from the mixed concentrate. The two stages together are called part of amalgamate flotation Flowsheet, which is the most widely used process in production. It is quite economical to adopt this process when raw ores contain low-grade nitrogen, copper-lead, copper-zinc, and lead-zinc.
Iso-flotability Flotation Process
According to minerals’ flotability in ores, mineral assemblages of good, medium and worse flotability are separated through flotation separation. Secondly, different helpful minerals are selected out from all mixed concentrates, which is called iso-flotability flotation process. For example, Huangshapinng lead-zinc ore dressing plant of our country, and Zheskaz of former Soviet Union both adopt this process. beneficiation,Mineral Processing,rotary kiln http://www.dryballmill.com