In the university or even a few years after graduation, I have always thought that only the mining industry has a filter press, probably because I studied a mine-related major, so the cognition is relatively limited, with the increase of industry contact and cross-industry exchanges, only to know that the filter press is used in many industries. This chapter will focus on the dehydration equipment of fine-grained minerals.
Commonly used fine-grained mineral dehydration equipment in the mining field includes belt filter press, vacuum filter, filter press, pressurized filter, horizontal sedimentation centrifuge, scraper centrifuge, etc., horizontal sedimentation centrifuge and scraper centrifuge will be introduced in the next chapter of the centrifuge topic, this chapter is mainly the introduction of filtration, filter press equipment brand.
Belt filter press
Belt filter press is a kind of filter press with simple structure, convenient operation and continuous feeding, with high operating rate, low energy consumption, and lower filter cake moisture than vacuum filter. It is widely used in sludge dewatering treatment in urban domestic sewage, textile printing and dyeing, electroplating, papermaking, leather, brewing, food processing, coal preparation plants, petrochemical, chemical, metallurgy, pharmaceutical, ceramics and other industries.
In the mining industry, Austria's ANDRITZ andritz belt filter press has always enjoyed high praise, especially in foreign markets, such as Russia, although the unit price of Andritz equipment is relatively high, but many Russian users prefer to use it. In China, many factories are making belt filter presses, but there are better brands such as Shenyang Yuhua Environmental Protection.
Disc vacuum filter
Before the large-scale promotion and use of plate and frame filter press, the disc vacuum filter was still used more, but the moisture of the dehydrated product was relatively high, which could not well adapt to the requirements of the mine for the moisture of the product material, and slowly withdrew from the market in the past ten years. At present, the technology of disc vacuum filter is still relatively good, and most of the production plants in China have withdrawn from the development and production of this product.
Pressurized filter
The pressurized filter is developed on the basis of the disc vacuum filter, which is mainly used in coal preparation plants, mainly to solve the dehydration problem of flotation refined coal, and the use effect is more, many coal preparation plants like to use pressure filters. However, the pressurized filter covers a relatively large area, and needs more supporting equipment, the exhaust noise of the pressurized filter is relatively large, with the rapid promotion and application of the diaphragm filter press, in recent years, the users of the pressurized filter are becoming less and less. At present, only Laiwu coal machine in China is still insisting on making this equipment, and the effect is relatively good.
Filter press
According to the different filter plates, the filter press has gone through three stages: plate and frame filter press, chamber filter press and diaphragm filter press, and the mainstream product in the market is the diaphragm filter press, which is a relatively high-end product. The development of filter presses can be studied as a business case.
Before 2015, the development of filter presses was basically the development of various industries fighting separately, many factories were working silently in their own industry fields, and the coal industry was doing the dehydration of coal slime, such as Hengshui Haijiang, Zhongda Belette, Jingjin Equipment and other factoriesNon-coal mines are doing dehydration of concentrate and other products, such as Chengdu Changjie;Sewage treatment is doing sludge dewatering, such as Xingyuan Environment, Shanghai Fujie Environmental Protection, etc., and other industries are also operating their own fields, which is a matter of course.
Before 2016, many filter press equipment manufacturers have entered a period of confusion, such as Hengshui Haijiang, which has done a lot of projects in the coal preparation plant, but product quality, technology research and development and innovation, after-sales service, etc. can not meet the needs of on-site users, from the industry boss directly to the bottom, many other enterprises also have the same problem.
In addition, many equipment factories have been operating in their own fields, and do not communicate with other industries, can not learn from each other and reference superior technologies, once there are new competitors appear, enterprises will face great challenges.
Since 2016, China's attention to environmental protection issues has increased, and the demand for environmental protection equipment in various industries has increased sharply, driving the sales growth of filter presses and other related products.
It is by virtue of this shareholder that Jingjin Equipment has carried out technical reference and penetration in multiple industries on the one handOn the one hand, it goes deep into the user's site and solves the existing problems of the filter press one by one, which has been highly recognized by the userOn the other hand, because there are more parts of the filter press, many factories are purchased parts, Jingjin will introduce the concept of self-produced parts into the actual production, although the initial investment is more, but the effect is still very significant, the quality control of the equipment is very good. Coupled with the relatively reasonable marketing and publicity methods of the enterprise, the development of Jingjin equipment after 2016 has entered the stage of take-off, and its filter press has achieved the first place in many industries. However, in the past two years, after Jingjin was listed, the pre-sales and after-sales services were greatly discounted, and the performance of the new product was falsely advertised, which has caused a very bad impact on users.
For foreign brands of filter presses, ANDRITZ Andritz, Metso and others are still developing in a decent manner, without big ups and downs, and there are not many improvements.
In the fierce market competition, only by constantly innovating and investing, upholding the real customer service concept, can we take advantage of the opportunity to develop and grow.
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