The present invention relates to a method of extracting apatite rare earth containing rare earths from the dip method apatite containing rare earth nitrate solution was taken feed solution, feed solution acidity of 0.3 ~ 1.0mol / L, ammonium nitrate or nitric acid Sodium is a salting-out agent, the concentration is 1.0-3.0 mol/L, and the extracting agent is dimethylheptyl methylphosphonate (P350) or di(2-ethylhexyl) 2-ethylhexylphosphonate (P502). diluting solvent is n-heptane or kerosene, extractant and diluent volume ratio of 9 to 8:2, both the composition of the organic phase, the organic phase and the flow ratio of 1/5 to feed liquid 5:1, and The flow ratio of the washing liquid is 1:10 to 10:1, and the flow ratio with the stripping acid is 1:10-20:1, the washing liquid is ammonium nitrate or sodium nitrate solution, and the stripping solution is nitric acid or hydrochloric acid solution, and the precipitate is precipitated. The agent is oxalic acid, and calcined to obtain a rare earth oxide, the purity is more than 95%, and the rare earth recovery rate is above 98%.
Needle part mould refers to plastic Needle Hub Mould and plastic Needle Cap Mould. It is generally made from P20H and STAVAX steel. And customized mould steel for it is also available.
Needle part mould is of higher precision and more mould cavity than Syringe Mould, and its working life is also longer, even more than 5 million shots.
Mould Parameter:
Mould Life: 5,000,000 shots
Mould Cavity: Multiple cavities, can be customized
Runner Type: Cold runner, semi-hot runner
Mould Steel: Core and cavities: STAVAX
Base: P20H
(the mould steel can be made at your request)
FAQ:
1. Are you a factory or trading company?
We`re definitely factory direct.
2. How about after-sale service?
One million shots is within defects liability period, and lifelong maintenance is offered.
3. Can we visit your factory?
Of course. We`re always looking forward to your visit.
Needle Part Mould Needle Part Mould,Needle Hub Mould,Needle Cap Mould,Needle Mold Yuhuan Zhengri Technology Co., Ltd. , http://www.syringemachine.com
