基礎技術沖擊式破碎機在鋰礦石細碎應用場景
沖擊式破碎機在鋰礦石細碎應用場景:新疆有色鋰礦石破碎選礦項目
新疆有色鋰礦石破碎選礦項目位于新疆和田市和田縣，主要鋰礦石為鋰輝石、鋰云母，脈石礦物為石英和長石，為了降低0-6mm成品中，0.5mm以下物料占比，
并綜合后續選礦工藝要求，黎明重工更多使用沖擊式破碎機代替高壓輥磨機方案，代客戶做來料加工試驗結果表明，沖擊式破碎機比高壓輥磨機破碎產生的0.5mm以下產品含量降低43%左右。最終0.5-6mm成品進行兩段重介質選礦，得到精礦、中礦及尾礦三種產品。
新疆有色鋰礦石破碎選礦項目客戶加工鋰礦石（主要成分之一為鋰云母），傳統方案在超細碎階段一般采用高壓輥磨機，而高壓輥磨機0-0.5mm含量非常高，非常不利于鋰云母的重選。因此，客戶希望尋求其他替代方案，以減少鋰云母破碎產品中-0.5mm粒度含量。
接到客戶要求后，世邦綜合業主的生產需求、特殊的物料屬性以及后續選礦工藝要求，更多使用沖擊式破碎機代替高壓輥磨機，并為客戶代為做來料加工試驗。最終實驗數據表明，沖擊破比高壓輥磨機破碎產生的-0.5mm產品含量降低43%左右，采用世邦沖擊式破碎機代替高壓輥磨機效果遠遠超出預期，客戶對該技改工藝方案和世邦專業的服務非常滿意。
2025年2月，該項目投料試車成功，好的批合格鋰精礦品位達到5.0%，該項目采用了好的的重介質選礦工藝，選礦成本降低約40%，每年將能產出60萬噸鋰精礦。
設備用途：用于超細碎，為重介質選礦提供合格粒度的原料。
礦石性質：屬于花崗偉晶巖類鋰礦石，主要鋰礦石為鋰礦石、鋰云母，其中鋰輝石含量約21.6%，鋰云母含量約4.98%；主要脈石礦物為石英和長石，其中石英含量約28.26%，長石含量約43.09%，礦石密度：2.62t/m³。
破碎工藝：采用四段二閉路工藝流程，其中粗碎設在采場，礦石粗碎后轉運至選礦廠粗礦倉，進行中碎、細碎和超細碎，中碎采用圓錐破碎機，超細碎采用沖擊式破碎機。最終產品為-6mm（其中-0.5mm含量盡可能少）。原則工藝流程見圖1.
立軸沖擊破設計通過量：2403t/h（破碎系統新給料量為890t/h，沖擊破最大循環負荷約為270%）。
給料方式：立軸沖擊破采用皮帶給料機給料，給料粒度（6-30）mm。
產品要求：最終破碎產品粒度-6mm，且產品中-0.5mm粒度含量盡可能少。
考慮到沖擊破的檢修強度，需要考慮一定的備用率，建議備用率≥30%。
安裝地點：該項目選礦廠的中細碎廠房室內（地面海拔4602m），正常工業采暖，礦區地形陡峻。
該項目和田縣管轄，位于和田縣城，地勢總體南高北低，海拔多在4500m以上，最高海拔6260m，最低海拔4481m，相對高差300m～1200m。項目屬于鋰鈹稀有多金屬礦，含鋰礦物以鋰輝石為主，其次為含鋰白云母，鉭鈮礦物主要是鉭鈮鐵礦。
礦石性質：屬于花崗偉晶巖類鋰礦石，主要鋰礦物為鋰輝石、鋰云母，其中鋰輝石含量約21.6% 鋰云母含量約4.98%;主要脈石礦物為石英和長石，其中石英含量約28.26%,長石含量約43.09%。礦石密度： 2.62t/m³。
立軸沖擊破給料皮帶的處理能力為0-700t/h(已考慮1.1的波動系數)。
工藝流程
原礦經三段一閉路破碎及立軸沖擊破超細碎篩分后產品粒度為-6mm，原礦經濕篩分級后，0.5-6mm進行兩段重介質選礦，得到精礦、中礦及尾礦三種產品，中礦經膠帶給入磨機；-0.5mm經濃縮后泵送至磨礦排礦池，磨機排礦與旋流器形成閉路。系統新給料量:294.7t/h（含波動系數1.1），其中中礦比例約為73.6%，-0.5mm比例約為26.4%。
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Henan LIMING Heavy Industry Science and Technology Co. LTD which mainly manufacture large and medium-sized crushing and grinding equipments was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. The Headquarter is located in HI-TECH Industry Development Zone of Zhengzhou and covers 80000 m ². Another workshop in Shangjie Industry Park covers 67000 m ². Over the more than 30 years, our company adheres to modern scientific management system, precision manufacturing, pioneering and innovation. Now LIMING has become the leader in domestic and oversea machinery manufacturing industry.
LIMING brings a large number of high-qualification talents together. Bai Yinghui, general research and development engineer, is a well-known expert in crushing and grinding area who won the youth medal of technology of the state council and receives special government allowance. LIMING owns an experienced service team, offering the customer free design and professional skill training and live guide for installation and debugging. The company's service networks have spread all over the country. Established client files, and mix the traditional door-to-door service with online service together, complementary the advantages. LIMING has won high recognition from clients.
The company mainly manufactures mobile crushers, stationary crushers, sand-making machines, grinding mills and complete plants that are widely used in mining, construction, highway, bridge, coal, chemical, metallurgy, refractory matter, etc. Product quality is life, and scientific innovation is motive power. LIMING got ISO international quality system certification, European Union CE certification and Russian GOST certification. The company has strong research and development strength and innovation.
LIMING machinery research institute was founded in 2005 which is the most powerful comprehensive technological research institute in the domestic mining machinery industry and provides top scientific research platform for professional personnel. Up to now, LIMING has won 10 national patents, 24 national utility model patents and 3 provincial science and technology achievement awards. The company products remain the international leading level by strengthening international exchanges and cooperation all the time, and has won a wide range of international market, such as Russian, Azerbaijan, Kazakhstan, Turkey, Kuwait, South Africa, Egypt, Vietnam, Malaysia, India, Australia, Korea, Canada and European Union,etc. Through more than 30 years' hard work, LIMING's staff built supremacy of credibility, excellent quality, service "LIMING" brand, and has made outstanding contributions to the development of mechanical manufacturing industry for China and the whole world.
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