The difference by comparing ball mill and vertical mill
The two-compartment ball mill operating in a closed circuit with a high efficiency separator is thus still the most preferred arrangement for new cement grinding installations although the vertical millnow has emerged as a viable alternative to the ball mill system and has increased its share of the market for cement mills over the last decade. There are a number of explanations to this situation, related to issues like cost and ease of operation, cost of installation, cost and ease of maintenance, product quality, versatility, etc. For a long time, ball mill has been key equipment for high capacity grinding demand. Nowadays, vertical mill will be active in this field. You must want to know the comparison between them, please read as follows:
1). Higher grinding efficiency. Vertical mill grind material in material bed, energy cost will be 30% lower than ball mill, as sound energy and thermal energy will cause energy loss in ball mill.
2). Simpler process flow and less investment need in infrastructure. Simpler design in powder transmission ensures less breakdown time and better operation; compact arrangement requires only 70% building area and 50%-60% building space of that for ball mill. As the professional manufacturer of complete sets of mining machinery, such as flotation cells, Henan Hongxing is always doing the best in products and service. jaw crusher:http://www.crusher-machine.com/
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3). Excellent performance in drying. As material is transferred by hot steam, wind temperature can be controlled to dry material with moisture of 12%-15% ready for grinding, while that for ball mill can only be 3%-4%.
4). Less consumption of metal parts. As there is no direct contact between different metal parts, metal consumption and iron content of final product will be reduced a lot, which will be good for final product quality.
5). Less noise and dust. Noise can be reduced by 20-25 db comparing with ball mill and dust will be reduced greatly thanks to its sub-pressure design.
6). Powder is more even. As qualified products can be separated in time and over grinding can be avoided, which can provide more even powder comparing with ball mill, in which over grinding is inevitable. Meanwhile, grain size can be adjusted easily by a unique system.
7). High drying capacity. Vertical mill uses hot gas to transport material, grinding water larger materials (such as coal, slag, etc.) can control the inlet air temperature, so that products reach the final moisture, vertical roller mill can be drying moisture 12-15% of the material; even if it is a dry ball mill whose drying water is only 3-4% of the materials.
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