Are you still bothered by how to choose the ore color separator?

I. what is the purpose of the ore

The ore color separator is mainly used to separate and separate the qualified ore, waste ore or the mineral to be separated by the different frequency or wavelength of the reflected light wave of different color materials.

On the one hand, there is no doubt that compared with manual selection, it is labor-saving, time-saving and efficient, simplifying the beneficiation process and reducing the processing cost. Through the particle size analysis of the original ore and the preliminary test of separation, the color separator is introduced into the beneficiation process. The results show that the direct economic benefit of the mine reduces the labor cost by about 1.8 million yuan / year and the indirect economic benefit reduces the beneficiation cost by 2.298 million yuan / year; the waste rejection rate is increased by nearly 14% and the qualified ore grade is increased by 16%.

On the other hand, many ores contain impurities, such as pure barite which is white and glossy. Due to the influence of impurities and mixed substances, they are often gray, light red and light yellow. The ore color separator has stable operation and high output. The ore can be classified according to the color and other factors to screen out the concentrate with high purity and uniform color, improve the grade and facilitate the rational utilization of resources.

2、 How to choose ore color separator

Generally, the ore color separator is composed of four parts: feeding system, irradiation and detection system, information processing system and separation execution system. The stability of its performance directly affects the production and benefit of users.

The working index of color sorter mainly includes three aspects: processing capacity, selection rate and belt output ratio. In daily production, these three indicators are integrated and indispensable. They are all key indicators and must be inspected at the same time.

Processing capacity is the quantity of materials that can be processed per hour. In addition to the configuration and structure of the color sorter recognition system, another important factor affecting the processing capacity is the specification. At the same time, the treatment capacity is closely related to the variety of raw materials, the proportion of impurities and the required selection accuracy.

Selection rate refers to the percentage of impurities selected from the raw grain in the total impurities contained, also known as color selection accuracy. The factors that affect the selection rate are mainly the flow rate and the type of color sorter, that is, the performance.

Generally speaking, the CCD mode is higher than the silicon photocell mode, and the check structure is better than the single choice structure. The selection rate of the color sorter equipped with CCD sensor technology can reach more than 99%, but it is difficult for the ordinary color sorter equipped with traditional sensor to reach the calibration index in the actual production. In addition, the selection rate is also affected by the ratio.

Take out ratio refers to the ratio of the amount of impurities in the waste selected by the color sorter to the normal rice or wheat grains. The ratio can be set, generally around 1:3 ~ 1:5. If the ratio is too high, it will affect the selection rate and processing capacity. If the ratio is too low, it will cause waste. If it is reprocessed, it needs to invest a certain amount of human and material resources, which will cause a lot of trouble and economic loss.

In addition, equipment failure rate, after-sales service, price, etc. should also be considered when selecting ore color concentrator.

3、 Problems in the application of ore color separator

In order to cope with the market changes, the development of color sorter in China is also constantly forging ahead. Various enterprises have carried out extensive and continuous research on color sorter. From the beginning of photoelectric (Analog) technology, the application of CCD (digital) technology, to the research and application of intelligent color sorter cloud technology and Internet of things technology, color sorter technology and application has been constantly updated.

In the application of the ore color separator, the performance may be unstable, which requires frequent maintenance and re debugging. Most of these problems are caused by the low stability of the optical system composed of the light source, background and imaging system of the color separator, especially on the equipment with simple optical system.

In addition, there are many dusts and dusts in the application environment, vibration and interference are also large, and the change of temperature will affect the working state of the color sorter, resulting in the inaccuracy of the detection signal or the change of the delay time to control the opening of the high-pressure air valve, thus affecting the accuracy of the impurity injection action. In addition, the matching degree of the process, material problems and so on will have a certain impact on the effect of color selection.

4、 Future ore color separators

On the basis of independent innovation, the color sorter industry needs to make breakthroughs in the following aspects:

(1) The application of new light source and mixed light source; the research and development of better spray valve to improve the productivity and reduce the out of band ratio to adapt to the color selection of more products; the research on signal processing and control technology of CCD color sorter to solve the randomness, multi-channel and other problems of CCD color sorter.

(2) New high-speed and large-scale microprocessors are used to embed more recognition algorithms to improve the practicability of the system;

(3) With "Internet +" as a tool, we will vigorously improve the construction of big data cloud system platform, equipped with fault diagnosis and Internet communication functions. When there is a fault, we can ask for help from the enterprise after-sales service front desk in real time and ask for technical guidance. Realize the intelligent and remote intelligent color selection operation, and bring infinite value-added business information to customers through scientific and effective analysis.