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中国河北省安平县城东开发区红星路 1 号
The application of mining screens in the energy field is extensive and critical Its role is not only reflected in the mining and processing of traditional energy (such as coal, oil, and natural gas), but also extends to the development of new energy (such as shale gas, geothermal energy, lithium mines, etc ) and the energy conversion process
A. Coal screening and washing:
Mine screens are used to classify raw coal according to particle size (such as lump coal, fine coal, and coal powder), and remove impurities such as gangue and sulfur through the washing process, thereby improving coal combustion efficiency and reducing pollution emissions.
B. Classification of thermal coal and chemical coal:
Screening can be used to meet the needs of different applications (e.g. coal for power generation needs to have controlled particle size, while coal for chemical industry needs to have high purity).
A. Screening of fracturing proppant (ceramsite sand):
In the fracturing operation of shale gas and shale oil extraction, the mine screen is used to screen high-strength ceramsite sand (proppant) to ensure its uniform particle size, prevent the closure of fracturing cracks, and ensure the efficiency of oil and gas flow.
B. Drilling fluid treatment:
Screen cuttings and impurities in drilling fluid to maintain the cleanliness and circulation performance of drilling fluid.
Desulfurizer and adsorbent screening:
In the natural gas desulfurization and dehydration process, mineral screens are used to grade activated carbon, molecular sieves and other adsorption materials to ensure that their particle size meets the process requirements and improve purification efficiency.
Application in the fields of new energy and clean energy
A. Spodumene/lepidolite screening:
In lithium ore processing, ore screens are used to grade crushed ore and extract lithium concentrate, providing high-purity raw materials for lithium battery positive electrode materials (such as lithium carbonate and lithium hydroxide).
B. Battery material particle size control:
Precision screening of battery precursors such as lithium cobalt oxide and ternary materials to ensure particle uniformity directly affects battery performance and safety.
A. Fracturing proppant classification:
Similar to conventional oil and gas, mining screens are used to screen proppants in shale gas and combustible ice mining to ensure the conductivity of reservoir fractures.
B. Hydrate separation:
In methane hydrate mining, screening technology is used to separate solid hydrates from impurities and improve energy extraction efficiency.
Geothermal fluid filtration:
Mine screens are used to filter cuttings and sediments in geothermal wells to prevent pipe blockage and equipment wear in geothermal power generation systems.
Biomass particle screening:
In the production of biomass fuels (such as wood chips and straw pellets), screening is used to remove oversized or oversized particles to ensure combustion efficiency and thermal stability.
A. Coal powder screening:
Control the particle size of coal powder entering the furnace, optimize combustion efficiency, and reduce unburned carbon loss and nitrogen oxide emissions.
B. Desulfurization gypsum treatment:
The gypsum by-product after screening of coal-fired flue gas desulfurization is used in building materials production to achieve resource recycling.
Catalyst carrier screening:
In the production of hydrogen production by water electrolysis or fuel cell catalysts, materials such as alumina and carbon carriers are screened to ensure catalyst activity and stability.
选择取决于物料硬度、含水量、颗粒大小和冲击力:
潮湿或粘性物料 → 聚氨酯筛网(防堵塞)
高磨损物料 → 锰钢编织网或冲孔板
高精度筛分 → 不锈钢编织网
重冲击物料 → 钢边聚氨酯板或橡胶筛板
选择正确的筛网可以提高产量并减少停机时间。
使用寿命随物料磨蚀性、振动频率、安装张力和筛网类型而变化:
聚氨酯筛网:3-12 个月
锰钢筛网:1-6 个月
不锈钢筛网:2-8 个月
橡胶板:4-12 个月
正确的张紧和选择合适的孔径可显著延长使用寿命。
堵塞由于水分、不规则颗粒形状或不合适的孔径设计引起。 预防方法:
使用自清理筛网(波浪型或琴弦型)
更换为聚氨酯防堵塞筛网
调整振动振幅和筛面倾角
对潮湿或泥泞物料进行预筛分
防堵塞解决方案大大提高了筛分效率。
更换期间的关键点包括:
确保整个筛网的张力一致
检查筛框是否有变形
钩子类型或紧固系统与您的筛机匹配
清理筛床以清除残留物料
正确的安装可减少破损并提高筛分精度。
筛分效率可以通过以下方式提高:
选择合适的孔径和筛网材料
调整振动频率和筛子倾角
保持均匀的物料进给
使用多级筛分设计
定期维护筛床和筛网
通常可实现 10-30% 的效率提升。