Vertical impact crusher used in cement production

Time: 2015-03-04

With the progress of the domestic cement production technology, the new pre-crushing process is widely used in the production of cement clinker. Vertical impact crusher due to high crushing efficiency, investment and quick, pre-grinding process to become the most commonly used crushing equipment. This paper describes in detail the impact on the vertical break in cement production and its applications.

Performance characteristics of vertical impact crusher

(1) the material crushing ratio, the product fineness, quality, materials after crushing the powder material is less than 2 mm reached about 30%, and the crushing fineness of not consumable wear effects, without the use of constantly adjust equipment.
(2) reasonable ingenious device structure and high quality wear parts determines the vertical impact crusher with low compared to other crusher crushing power, equipment operation rate, fewer wear parts, a small amount of wear, and equipment costs low superiority.
(3) advanced circulating lubrication, external cooling circuit design to ensure good bearing lubrication and cooling.
(4) body structure design, airflow generated by the use of equipment operation due to the crusher body's internal circulation, causing dust pollution in the surrounding environment does not need to configure removal equipment.
(5) cement clinker vertical impact crusher rotor with high wear-resistant alloy casting material as a whole, long life, ease of processing and manufacturing; rotor structure optimized design, injection port liner to extend the life of a high chromium cast iron injection port liner can be broken cement clinker (mix) 3.5 to 4.5 million tons; spindle bearing using statically indeterminate structure, carrying capacity is insufficient to solve the bearing and the shaft head bent generate additional vibration problems.
(6) under the shaft and bearing cap seal centrifugal seal in the shaft of long-term high-speed operation without damaging the seal problem; spiral deflector inside the machine, make a strong air flow generated during operation of equipment inside the crusher formation cycle. The outside world does not produce pollution and comply with environmental requirements.

Application examples in cement production

1, a cement factory in Jiangxi Province in July 2012 in Shanghai Zenith crusher manufacturers purchased a vertical impact crusher as a pre-crushing equipment, installation in August that year, the former mill crushing plant is used in open systems, clinker by vertical impact crusher directly into the ball mill, crushing injection port liner approximately 15,000 tons of clinker per replace a pair of (3), back liner wear little more than two years to replace a set of available boot When no dust, no noise, the effect has been very good, very satisfied user.

2, a cement plant in Jiangsu Wujiang County raw mill system is a 2.4X8 rice mill, when the original station yield 30 to 31 tons, because the factory after two Rotary kiln change increase in production, the raw material production has now not on the application requirements, to solve this problem, had to increase Taihsi 1.5 × 5.7 米 a small ball mill grinding of raw materials. They learned that Red vertical impact crusher other users of the later, in April 2013 a purchase installed before the raw mill for secondary crushing limestone.

The vertical shock break sets yield 50 to 60 tons / hour, feeding an average particle size greater than 35 mm, the expected average particle size of less than 6 mm, and contains a lot of powder, working 12 to 14 hours a day, has broken stone nearly 360,000 ton, equipment operation 10 months when replacing a set of injection port liner, back plate has minor wear, other components basically no wear. Since the use of a pre-crushing system, the former mill output 30.5 t / J, when up to 38 t / h, the yield increase of 25%, 15% reduction in power consumption, the economic benefits are obvious.

It can be seen that the vertical impact crusher is a difference between the common new larger crusher crushing equipment, cement clinker grinding as pre-grinding equipment, the advantage of the majority of users has been positive, the products in the country promotion of high value.