Quartz Sand Dressing Production Line
【Introduction】:
Quartz sand purification is removal of a small amount of impurities and the high difficulty separation technique to obtain refined quartz sand or high purity quartz sand. The purification technologies of quartz sand at home and abroad are washing, classifying & desliming, scrubbing, magnetic separation, flotation, acid leaching, microbial leaching, etc.
【Application】:
Quartz Sand Dressing Production Line is suitable for quartz sand containing iron or mica.

【Process Description】
Washing and classifying desliming
The SiO2 grade in quartz sand decreases by quartz sand size becoming finer, so washing and desliming of crude quartz sand is necessary before next step.
Scrubbing
Scrubbing is the way to remove film iron and impurity minerals on the surface of quartz by mechanical force and crush these mineral aggregate. The quartz sand gets further purification by classification. There are two kinds of methods rob scrubbing and mechanical scrubbing.
Flotation
The separation of mica and quartz is difficult, the effective methods: anionic collector in acid condition and anionic – cationic collector in alkaline condition. The purification of quartz sand can reach 99% after scrubbing, desliming, magnetic separation and flotation.
Acid Leaching
Dilute acid had a significant effect on removing iron and aluminum, and concentrated acid for the removal of titanium and chromium, and mixed acid for mineral impurity. Control various factors of acid leaching should be based on quartz final grade requirements, and as far as possible reduce the acid concentration, temperature and dosage to achieve quartz purification.

【Case】
A quartz sand dressing plant in Yunnan with the main component was quartz sand accounting for 95-97%; siliceous cement accounting for 8-23%, the impurity minerals were hematite, limonite, etc. accounting for about 1-3%. The plant adopted screen classification – dry magnetic separation – dosing strong scrubbing-flotation process, the final indexes: SiO2 ≥ 97.62%, Fe2O3 ≤ 0.24, Al2O3 ≤ 1.11%.The poor indexes seriously affect the production and economic benefit. Therefore, the plant commissioned the Shanghai Lipu to reform technology. By dressing tests, Shanghai Lipu decided to adopt the screen classification – dry magnetic separation – dosing strong scrubbing – acid leaching process.

After the technical reformation, the purified quartz sand met the quality requirements of silicon powder, and it can be used in ceramic, paint, metal casting industry after the superfine grinding.

    Lipu Heavy Industry Co., Ltd, headquartered in Pudong New District, Shanghai, is composed of Shanghai

Lipu Heavy Industry Co., Ltd and Jiangsu Lipu Heavy Industry Co., Ltd., which is a famous company

specialized in designing and manufacturing ore dressing machinery, crushing and drying equipment. Thanks

to our profession and rich experience, we become well known for supplying complete mineral processing

plants at 100-5000tons per day processing capacity and providing turnkey project service. We have

established long-lasting cooperation with many research institutions at home; we can do mineral beneficiation

experiment and design complete ore-dressing plant and non-standard equipment according to clients’

requirements.  We supply one-stop service for our customers: From the designing of the technological plans,

equipment manufacturing, installation, commissioning and operation.

    We have cultivated a professional technology and after-sales service team, and successfully achieved

ISO9001：2008 Quality Management Certificate and EU CE Certificate, and Russia GOST Certificate, etc.,

our products are well-known both in China and foreign countries, which have been exported to more than 60

countries, including Canada, Australia, Russia, Central Asia, Middle East, South America, Southeast Asia,

Northeast Asia, Africa, etc.

    We have well experienced technical team in our Technical Department and R&D Department with more than

30 technicians (5 senior engineers and more than 20 technicians).  In our factory, we have 200 sets of various

processing equipment, including complete inspection equipment, and the total hoisting tonnage is above 500

tons.  We guarantee product quality based on mature processing technic.  Since we have established long-

lasting relationship with forging company and logistic company, we can assure you quality products and timely

transportation.

    We devote ourselves to providing trustworthy product and value-added service for global customers and to

creating value for customers, which are the unanimous goal of all the Lipu employees. Under the guidance of

united, pragmatic, dedicated and innovative spirit of enterprise, we look forward to cooperating with you to

build a beautiful world and prosperous future together.