First, the color sorter structure

Mining industry with the non-metallic color difference sorter is easily detected physical characteristic depending on the ore reflected component (light, radioactive, magnetic and electrical properties and the like), be identified by a variety of detection methods, and must rely on A sorting device that separates ore or waste rock. It mainly consists of feeding system, photoelectric detection system, signal processing system, separation system and man-machine interface.

Second, the color sorter works

When the color sorter is working, the selected material enters the machine from the top hopper. Through the vibration of the vibrator device, the selected material slides along the channel, accelerates down into the observation area of ​​the sorting chamber, and passes between the sensor and the background plate. Under the action of the light source, according to the intensity and color change of the light, the output signal of the system is driven to drive the solenoid valve to blow the heterochromatic particles into the waste chamber of the receiving hopper, and the selected material continues to fall to the finished product cavity of the receiving bucket. In order to achieve the purpose of sorting.

Third, the color sorter classification and comparative analysis

According to the architecture, it can be divided into two types: crawler type and chute type.

The track color sorter has a wide range of materials, high color selection accuracy, small damage, high output, small take-out ratio, and can be directly packaged after selection. The damage to the material is relatively slight and the damage is small. And the speed is controllable, the output can be adjusted, and it can be designed according to the actual production of the customer, but the cost is relatively high.

The chute color sorting machine is suitable for regular materials, and the color selection effect is not ideal for materials with large differences in shape and size. After the color selection is completed, the material will be accelerated for a period of time and distance, which will increase the damage to the material, resulting in a high breakage rate. Moreover, the chute color sorter has a fixed structure, a fixed speed, and a fixed output.

Fourth, the application of color sorter in non-metal industry

Color sorter can be used not only to produce a sorting, but also widely used potassium feldspar, barytes, many points of the non-metallic mineral quartz sand, fused silica, calcium carbonate, white marble, calcite, tungsten ore, phosphorus ore selected. Take K-feldspar and quartz sand as an example to introduce the application of color sorter in non-metallic minerals:

1. Application of color sorter in potassium feldspar picking

The mixed ore of potassium feldspar and quartz is used as a sorting object, and the potassium feldspar has the characteristics of meat red, quartz having transparency or milk self-color, and is sorted by a color sorting machine.

With potassium feldspar as the sorting target, the particle size of the ore is controlled at 3-10mm, and a sorting threshold is set for sorting. Through the determination of the raw ore before sorting and the K-feldspar potassium grade after sorting, the potassium enrichment ratio was 1.3, and 35% of the waste rock was discarded, which has a good sorting effect.

2. Application of color sorter in quartz picking

Quartz sand ore, a relatively pure silica sand is white or milky white, color, or containing gangue minerals and iron impurities is yellow, light yellow or light brown and gray, etc., silica sand and iron impurities or gangue minerals color Difference is the key to color selection.

Jet separation of quartz sand and gangue minerals

Quartz sand color machine feeding and products

V. Main factors affecting the effect of color selection

1, camera resolution

The camera is equivalent to the "eye" of the color sorter. The higher the resolution of the camera, the clearer the color sorter "sees", which provides a basis for the accurate judgment of the material by the color sorter.

2, software algorithm, the ability to distinguish color differences

The software is equivalent to the "brain" of the color sorter, which determines its ability to distinguish chromatic aberrations. The software algorithm analyzes the data seen by the camera, which determines the intelligence of the color sorter and the "ideas" of the color sorter on the material.

3, feeding system

The feeding system determines how the material enters the color filter "field of view" and leaves the color sorter after the sorting is completed.

4, nozzle performance

The color sorter sprays gas through the nozzle to separate the material, which is equivalent to the "hand" of the color sorter. After the "brain" of the color sorter determines the color of the material, the command is issued to the nozzle for execution, so the flexibility of the nozzle And stability ultimately determines the sorting effect of the color sorter.

Sixth, color sorter common fault analysis and treatment

1. Solenoid valve leaks

The cause of the malfunction: there is dust inside the valve; the solenoid valve is damaged.

Treatment method: valve repeated test; replace solenoid valve

2, the solenoid valve does not move

Fault reason: Poor contact between plug and socket after valve; spool is broken; color plate is damaged

Treatment method: re-plugging, repairing bad contact position; replacing solenoid valve; replacing color palette

3, the solenoid valve has a small amount of air

Cause of the malfunction: there is dust inside the solenoid valve; the air pressure is too low

Treatment method: repeated high frequency test of solenoid valve; check pressure gauge and related gas path

4, material splash

The cause of the failure: the temperature difference between the material and the trough is too large; the trough is agglomerated; the trough is scratched

Treatment method: adjust the temperature of the trough to be substantially the same as the material temperature; clean the trough with a soft cloth material; sand or replace the trough with fine sandpaper

5, the solenoid valve moves frequently

Fault reason: the color selection method is not selected; the background board position is not set.

Processing method: correctly select the color selection mode; readjust the background board

6, the whole machine is basically not color-selected

Fault reason: sensitivity is too low; solenoid valve power is not turned on

Treatment method: readjust the sensitivity; turn on the solenoid valve power supply

7, color selection quality is getting worse

The cause of the malfunction: there is dust on the glass of the sorting box; the color sorter is not clean.

Treatment: Manually clean or wipe off the dust with a soft cloth; check the cleaning device or replace the rubber strip

8. The single-side sorting effect of the whole machine is poor.

Fault reason: the rodless cylinder is not in place, and the cleaning effect is poor.

Treatment method: adjust the duster and the speed of the dust

9, the color sorter often stops

The cause of the fault: the sensitivity is too high; the background plate is improperly adjusted; the raw material contains too much impurities; the color sorter has insufficient supply pressure; the air pressure protection often occurs.

Treatment method: re-adjust the sensitivity; readjust the background plate; reduce the output; check the air pressure; re-adjust if the air path is too far; clean or replace the filter element to make the line smooth

10, air compressor failure

Fault reason: The three-phase winding of the motor is damaged; the AC contactor is damaged or the contact is bad; the thermal relay is damaged or the contact is bad; the 380v power supply is out of phase; the three-phase voltage is unbalanced; the control switch line is damaged or abnormal.

Treatment method: replace the motor; repair or replace the AC contactor; repair or replace the heat relay; repair the power supply line; adjust the transformer to balance the three-phase power supply; check the control switch and circuit.

Aluminum castings are lightweight and able to withstand the highest operating temperatures of all die cast alloys.