application area
The composite crusher is mainly used for the secondary and tertiary crushing of hard ores and rocks in industrial sectors such as metallurgy, mining, chemical engineering, cement, construction, refractory materials, and ceramics. It crushes materials with a compressive strength not exceeding 200MPa, with a feed particle size of 450-1000mm and an average discharge particle size of ≤ 5-8mm.
Prospects of Folding Composite Crushers
Faced with the arrival of the peak period of high-speed railway construction in China, the market demand for composite crushers is particularly strong. However, due to the construction of high-speed railways, the requirements for sand and concrete aggregates are relatively high, and there are at least ten large enterprises in the composite crusher industry that have this production capacity to meet the demand. Composite crushers have been widely installed in the construction of highways and high-speed railways in various provinces and cities across the country, and are indispensable equipment for national infrastructure construction. For the crushing of basalt, the stone crushed by a composite crusher can reduce the needle like content of the stone to about 4% after being granulated by an impact crusher. It is an ideal composite crusher equipment in the production process of sand and gravel aggregates.
Folding repair and maintenance
Composite crushers are used to crush iron ore, sandstone, gypsum, blast furnace slag, coal gangue, and lump coal. Long term use will inevitably be covered with dust, which can affect the normal operation of the composite crusher and shorten its service life. Today, I will teach you how to effectively remove the dust inside the composite crusher.
1. Update the bag filters at the corners of the composite crusher and belt conveyor to LNGM64-4 and LNGM4-8 bag filters, respectively. The technical performance parameters are shown in Table 2. According to the characteristics of dust, water repellent and oil resistant filter materials are used. The LNGM4-8 bag type dust collector is arranged outdoors and its shell is insulated and waterproof. To ensure the reliable operation of the equipment, attention should be paid to the brand and specification model when purchasing key accessories of the bag filter, in order to reduce the failure rate of the equipment.
2. Improve the process layout of the bag filter and arrange the dust collector of the composite crusher according to the direction of the belt conveyor; Transforming the standard ash hopper of the bag filter into a double ash hopper structure eliminates one screw conveyor and elevates the bag filter, which is beneficial for the arrangement of the inlet duct (with a large angle of the duct); Install an air inlet box at the air inlet to allow the dust from the discharge port of the composite crusher to directly enter the air inlet box of the dust collector, saving elbows, reducing system resistance, and improving dust collection efficiency. Its process layout. The ash hopper adopts a single-layer flap valve to lock the air, eliminating the grid wheel feeder and its motor, reducing secondary dust and improving dust removal efficiency.
3. The dust at the corner of the belt conveyor is restricted by on-site conditions, and its chute and dust removal cover cannot be changed. The dust removal process layout is in the form of Figure 4, so that the dust removal cover is in a micro negative pressure state to eliminate dust from the belt conveyor.
4. In order to improve the comprehensive dust removal effect of the composite crusher and belt conveyor, it is necessary to sprinkle water at the material inlet of the composite crusher as needed (it is required to operate the composite crusher for 10-20 minutes), based on the need to benefit the service life of the filter material and pulse valve, as well as the dust raised at the ash hopper.
5. Strengthen the management of dust removal equipment, regularly check the sealing condition of the dust removal cover, and promptly handle any problems found. Management by objectives assessment shall be carried out for the post environment and dust discharge of bag filter, dust monitoring shall be carried out regularly, the work enthusiasm of post personnel shall be mobilized by economic leverage, the maintenance level of dust removal equipment shall be improved, and dust pollution shall be minimized.