Since 1996, Morganson Germany has been dedicated to the development and application of the MSort optical sorting system. The MSort optical sorter can be accurately identified and sorted by the color, shape or size of the material. In order to provide a more comprehensive sorting technology solutions, we have developed a Mogensen X-ray sorting and metal detection technology.
The Morganson MSort optical selection system is widely used in environmental protection such as ore, glass recycling, plastic sorting, etc. Currently, there are more than 500 optical sorters and 15,000 probability screens operating in customer factories around the world.
Mogensen quartz optical ore sorting - reduced iron content
Tag: Quartz ore light sorter color sorter Morganson sorter
summary:
Industrial silicon producers need quartz materials with the lowest amount of metal impurities to achieve the best results in the furnace. This report describes how a 30-100 mm quartz ore is automatically selected by color and brightness to reduce the amount of impurities.
1 Introduction
High concentrations of silica can be extracted from the shores of northwestern Spain. The size of these particles meets the requirements for the melting of silicon. Thanks to the application of the optical sorter, the product can easily control the content of elements such as iron, aluminum and titanium . Related studies have shown that seven selected workers can achieve the corresponding efficiency and quality required by the product.
2. Optical selection
The shore gravel is mined from open pit mines. Through cleaning and grading, a wide range of products, including high grade quartz gravel and pellets required by the construction industry, can be produced. 30-100 mm granules are used for optical sorting. Light yellow and grey stones contain less iron, which can be removed using the Morganson MikroSort AT model (see Figure 1).
Figure 1: MikroSort AT model light selector with two color cameras for double-sided scanning for rock sorting
Material enters the chute from the electromagnetic feeder. In the chute, the stones accelerate to 2.5 m/s, and while they are free to fall, they are scanned by color line cameras on both sides (Fig. 2). At 120 mm below the detection unit, the stone identified as "good" is reliably rejected by high-pressure air with a maximum force of 3 kg.
Figure 2: Quartz ore is accelerated in the chute and scanned by two color line cameras.
The MikroSort AT model is equipped with 156 high performance nozzles covering a working width of 1.2 meters. These nozzles have a pressure of 8 bar and can react 10,000 times in one second. Depending on the size and shape of the stone, the required number of nozzles is activated in a precisely calculated time. In this sorting process, the maximum air consumption is 400 standard cubic meters per hour. Along with the electrical connection of the optical sorter, a maximum of 45 kW of energy is required.
3. Sorting efficiency
Figures 3 and 4 are two different products. The color difference is very obvious. Some high-quality quartz ore surfaces are brown, but they are all gray.
Due to the application of the double-sided detector, the stone is assumed to be broken beforehand, so it can be defined as a "good" stone. This adds about 20% of production.
Figure 5 shows the chemical analysis of the feed and the “good†material after sorting. It can be seen that the metal impurities are significantly reduced. When the content of aluminum and titanium is reduced by about half, the iron content is also reduced from 0.15% to less than 0.05%. Therefore, the quartz stone after the selection meets the requirements for the melting of silicon.
Figure 3: Eliminated "good" material: low iron content quartz
Figure 4: Material passing through the detector: high iron content quartz
Figure 5: Chemical analysis of feeds and "good" materials after sorting
4. Select efficiency
This successful application shows that even difficult to sort and solid materials can be selected continuously and efficiently. The optical sorter operates at low cost based on the color, brightness and shape of the material. They even subtracted the manual extraction of the mine or the manual selection of the conveyor belt. With a particle range of less than 40 mm, or even 2-5 mm, optical sorters can reduce the workload of traditional ore processing methods or completely replace these methods.
Morganson's equipment offers a wide range of selections, so a wide variety of different products can be effectively selected.
Morganson Development History
* 1947 Swede Morganson proposes probability sieve theory
* 1968 Established Morganson Machinery Manufacturing Co., Ltd. in Hamburg, Germany
* 1988 merged into the German Argyle Group
* 1996 Production of the first optical sorter
* 2012 new test center
* 2014 Guangzhou Morganson Sorting Technology Co., Ltd. was established
* 2015 has produced 15,000 screening machines and more than 500 optical sorters
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