Phosphogypsum washing and drying equipment

This set of phosphogypsum washing and drying equipment adopts the sieving, washing, and grading process flow, that is, the phosphogypsum is first sieved to remove large particles larger than 25 mm, and then added to the grinding tank to grind into a slurry with water, and the slurry is removed by trimming and screening. Particle impurities above 0.8mill, while adding a certain amount of water to wash the phosphogypsum, and then classifying and dehydrating by a hydrocyclone and a dewatering screen to obtain a refined phosphogypsum product that meets the requirements. The yield is about 80%.

Wastewater treatment. The acidic wastewater of the dephosphorization gypsum production line is concentrated in the high-efficiency concentrator. PAM is first added to remove suspended solids. 20% of the acidic water flows to the neutralization tank, which is discharged after neutralization with lime milk. 80% flow into the circulation tank. Used in cycles.

During drying and calcining, the hot flue gas generated by the phosphogypsum through the screw conveyor (later changed to a belt conveyor) and the coal-fired boiling furnace enters the calciner through the two holes at the inlet end, and the materials are dispersed under the action of the rotor. Utilize and fully exchange heat with the flue gas. The dry material follows the exhaust gas to the outlet end, enters the cyclone separator through the exhaust fan, and the exhaust gas is evacuated after being collected in a cloth bag.

The original design of the calciner feeding equipment is a double-tube spiral. Due to the high humidity of phosphogypsum, strong adhesion, the screw is easy to jam, and the dryer does not feed smoothly. In order to ensure the safety of the subsequent equipment, the screw feeding is canceled, and the belt conveyor + flap lock valve feeding device is used. The effect is good after putting into use.

Related Articles

recycling system for construction waste

Pollution-free treatment and recycling system for construction waste

On March 16, the first pollution-free treatment and recycling project of construction waste in Baotou, with a planned investment of 110 million yuan, was put into trial operation. The system includes stone crusher, magnetic separator, drum screen, sand washer, etc. At the project site, a number of construction waste treatment equipment are running at full capacity and nervous. Relying on…

River dredging thickener tank

River dredging thickener tank with small footprint 200m³/h

LZZG thickener tank has high processing capacity, the maximum processing capacity of a single unit can handle 200m³ / h, high solid concentration at the bottom of the effluent, low operating cost, small footprint, low investment, energy-saving, low operating cost, simple operation, and convenient management. The quality of overflow water can easily meet national discharge standards or be recycled. Therefore,…

Abandoned mine

What are the uses of abandoned mines?

The value of developing abandoned mines Making full use of the energy resources in abandoned mines can not only reduce resource waste, improve the efficiency of development and utilization of energy resources in de-produced mines, but also provide a strategic path for the transition and relief of sustainable development for abandoned mine enterprises, thereby promoting a resource-exhausted city Transformation and…

Indonesian nickel ore output tailings processing equipment

Paris February 20 news, French mining and metals group Eramet said on Thursday that it plans to mine more than 3 million tons of nickel ore in Indonesia through its Weda Bay project this year. Eramet said at the annual results conference that the company began mining nickel ore on Halmahera Island at the end of 2019 and 500,000 tons…


Product Knowledge
Privacy Policy
Spare Parts