First, chlorination
Chlorine is a very effective oxidant for cyanide. Commonly used chlorine reagents are chlorine gas, sodium hypochlorite and calcium hypochlorite. Alkaline liquid chlorination is the most common method of destroying cyanide in solution. The liquid discharged from the heap can be chlorinated and returned to the heap for residual cyanide in the destructive loop. Other leachates can be treated similarly. The reaction of free cyanide and chlorine is fast and efficient. Only iron complexed cyanide is resistant to chlorination.
At the end of the leaching, the leaching residue is treated with a 0.5 g/L industrial grade calcium hypochlorite solution, which consumes 272.4 g of calcium hypochlorite per t residue. This method is fast and effective.
Second, air - sulfur dioxide
Recently, INCO used air-S0 2 or air-sulfite to destroy cyanide to a relatively low level. Under the condition of pH control and a small amount of copper as a catalyst, the cyanide can be rapidly decomposed by mixing with wastewater and SO 2 air. Selectively oxidizing the cyanide and cyanide complexes of metals, but also to remove iron cyanide complexes by alkaline chlorination can not be removed. This treatment can be carried out at room temperature using only lime water, SO 2 and air, and the residual total cyanide content is between 0.05 and 1 mg/L (between pH 9 and 10). It is currently considered to be the most economical and effective method.
Third, hydrogen peroxide
Cyanide can also be destroyed by H 2 O 2 , but the cost is too high.
Solar PV Bracket Roll Forming Machine
Solar PV bracket roll forming machine is used galvanized or PPGI as raw materials, it has light weight, hight duty, easy to operate advantages.
And it had great flexibility for commercial and residential rooftop solar systems.
It applies common with solar panels mounted on the frame parallel inclined roof.
Specifications:
Matching material
Galvanized, PPGI, Aluminum
Material thickness range
1.5-2.5mm
Feeding width
300mm(can change according to buyer's request)
Roller
15-21 rollers
Material of roller
45# steel with chromed
Main motor power
22KW
Forming speed
8-15m/min
Shaft material and diameter
80mm, 45# steel with chromed
Way of driven
Chain transmission or gear box
Material of blade
Cr12 mould steel with quenched treatment 58-62℃
Voltage
380V/3Phase/50Hz
Controlling system
PLC
Working process:
Decoiler - Feeding and leveling machine - Punch press - Main roll forming machine - PLC control - Hydraulic cutting - Collection table
Pictures for machine:
Training and Installation :
1. We offer installation service local in paid, reasonable charge.
2. QT test is welcome and professional.
3. manual and using guide is optional if no visiting and no installation.
Certification and after service:
1. Match the technology standard, ISO producing certification
2. CE certification
3. 12 months warranty since the delivery. Board.
Our advantage:
1. Short delivery period.
2. Effective communication
3. Interface customized.
Solar Pv Bracket Roll Forming Machine,Solar Pv Roof Brackets Roll Forming Machine,Solar Pv Panel Mounting Brackets Roll ,Stainless Angle Bracket Machine
YingYee Machinery and Technology Service Co.,Ltd , https://www.yingyee.cn