During the mining and production of raw ores, lump ores, and raw materials such as limestone, dolomite, bauxite, and raw coal, a large amount of dust is generated on many process equipment in mineral processing plants. This makes it difficult to achieve standard production conditions and exhaust gas emissions that meet emission standards, impacting the atmospheric environment and human health. Therefore, dust control is necessary at dust-generating points. Mineral processing plant dust collectors are mainly used to remove dust from crushers, vibrating screens, and belt conveyors in mineral processing plants that process iron ore, manganese ore, chromium ore, vanadium ore, titanium ore, copper ore, tin ore, zinc ore, nickel ore, cobalt ore, tungsten ore, molybdenum ore, mercury ore, platinum ore, rhodium ore, gold ore, silver ore, aluminum ore, magnesium ore, lithium ore, beryllium ore, and rare earth ore.
The primary comprehensive dust control technology for mining dust removal in mineral processing plant dust collectors is spraying. Depending on the characteristics of the dust source, wet dust control measures such as showering, misting, and covering are employed. In icy or water-scarce areas, where wet dust control is unavailable or fails to meet required standards, mechanical dust removal or a combination of mechanical and wet methods is necessary. Mechanical dust removal equipment must be suitable for the specific conditions of the mine, requiring a simple structure, compact size, and ease of relocation. When comprehensive dust control measures across all operating processes still fail to meet requirements, personal protective equipment may be necessary.
Manufacturing requirements for dust collectors in mineral processing plants
1. The dust collector body is designed to be sealed and tightened, and the dimensional tolerances of the connectors meet the accuracy specified in the standard tolerances and fits.
2. The complete set of crusher and dust collector equipment in the mineral processing plant is equipped with a blowing system, a blockage-clearing air cannon, matching flanges for the inlet and outlet air ducts, a fan inlet valve, a fan shock absorber, inlet and outlet flexible connections and matching flanges, a dust collector control cabinet, a fan rain cover, an escalator platform, dust collector legs, and related testing instruments, meters, and signal display devices.
3. The wall panels must be flat and free of distortion, with a diagonal error of less than 5 mm. During on-site installation, the verticality deviation of the columns and wall panels must be less than 5 mm. Parts that are deformed during transportation must be corrected.
4. The holes in the flower plate are made by stamping technology, and the position must be accurate. The deviation from the theoretical position shall not exceed ±1MM.
5. The thickness of the perforated plate is ≥6MM, the flatness of the plate is <1.5/1000, the diagonal length error is <3MM, and it is processed by punching technology.
6. Continuous welding uses carbon dioxide protected airtight welding and is subjected to a leakage test.
7. The main components of the injection system will undergo pre-assembly testing.
8. The cage frame of the dust collector is made on an automatic assembly line, with firm welding points, no burrs, and the cage frame is durable and corrosion-resistant.
9. The bag cage should be firmly connected, with a smooth surface and be treated; the bag cage should be easy to disassemble and assemble, and the bottoms of the filter bags should have appropriate spacing after installation and should not touch each other.
10. The dust collector top cover adopts shear-punch sealed top cover, and its weight and size are suitable for manual opening.
11. The filter bags of the vibrating screen dust collector in the mineral processing plant should be easy to disassemble and assemble, have good sealing performance, high installation efficiency, and be reasonably cut to minimize the seams. The overlap width at the joints should be no less than 10mm.
