What is secondary crushing? How to choose the location of the secondary crushing in the underground?

Unqualified large pieces produced after mining and mining are required to be crushed during the ore transportation process, which is called secondary crushing.

The cost of secondary crushing is related to the mining fee method. When the shallow hole falls, the secondary crushing cost accounts for 0% to 30% of the falling mining cost; when the deep hole falls, it is generally greater than 50%.

The ore is crushed twice. When the shallow hole falls into the mine, it is generally at the mining face and the ore gate or the vibration discharge machine. When the deep hole falls, it is generally in the secondary crushing roadway and the discharge funnel. As shown in Figure 1.

Figure 1 Schematic diagram of secondary crushing

(É‘) Use a bare drug pack to remove the funnel blockage;

(b) crushing large pieces on the vibrating ore concentrator with the earth-covering charge

1- bare drug pack; 2 - soil charge

Light Show Laser

CNI provides OEM DPSS and diode lasers for light show. Single wavelength in green, blue, yellow, red and multi-wavelength RGB lasers are optional. These lasers are designed with high reliability and ultra compact dimensions, can be perfectly integrated into customers' projectors.CNI can provide supporting photosynthetic perfect system for customers, including engineering drawings, photosynthesis, Laser and other necessary accessories. According to customer demand, to provide high power red, green, blue and other monochromatic laser light combination system. CNI can offer RGB mix solution for customers, you can make full color show lasers at any output power up to 50 watts.

â—†Green Laser

532nm

â– OEM-I-532 / 1~5W

â– OEM-F-532 / 0.3~3W

â– OEM-N-532 / 3~5W

â– OEM-W-532 / 6~18W

â– OEM-D-532 / 20~30W

520nm

â– OEM-F-520 / 1~800mW

â– OEM-D-520 / 1~3.5W

â– OEM-GD-520 / 3.5~5W

â– OEM-XD-520 / 7~8W

â– OEM-KD-520 / 6~10W

â– OEM-BD-520 / 11~20W

â– MGL-H-532 / 0.5~1.5W

â– MGL-F-532 / 1.5~2.5W

â– MGL-D-532 / 20~30W

â—†Blue Laser

447nm

â– OEM-F-447 / 1~3.5W

â– OEM-D-447 / 4~8W

â– OEM-GD-447 / 9~16W

â– OEM-XD-114 / 17~28W

462nm

â– OEM-GD-462 / 16W

â– OEM-KD-462 / 20~30W

455nm

â– OEM-KD-455 / 30~36W

â– OEM-BD-455 / 40~50W

465nm

â– OEM-F-465 / 1~3W

â—†Red Laser

â—†Yellow Laser

635nm

â– OEM-D-635 / 1~2W

â– OEM-GD-635 / 3~6W

â– OEM-XD-635/ 7~11W

â– OEM-BD-635 / 15~20W

â– OEM-TD-635 / 25~30W

589nm

â– MGL-F-589 / 1~300mW

â– MGL-N-589 / 300~800mW

â– MGL-W-589 / 800~4500mW

â—†RGB Laser (Multi- wavelength Laser)

RGB-XD	635nm & 520nm & 455nm
635nm & 520nm & 450nm / 10~12W	RGB-KD / 13W
	RGB-BD / 15~16W/ 20W
RGB-GD	RGB-FD / 35W
635nm & 520nm & 447nm
4W/ 6W/ 8W

Red Diode Laser,Light Show Laser,Green Laser Light Show,4W Blue Laser

Changchun New Industries Optoelectronics Technology Co., Ltd. , https://www.lasersciences.com