KC/KWB series Industrial Chiller is mainly applied in Plastic & Rubber industry; it can accurately control the molding temperature and shorten the molding cycle, increase the product quality and improve the production efficiency. They are also widely used in Metal working, Mechanical & Engineering, Chemical & Pharmaceutical, Food & Beverage, Laser, Electronics industry, Textile, Electroplate, Semi-conductor testing, Water jet, Vacuum coating, Construction and Military,
¨ Adopted world famous brand compressors and high efficiency condenser and evaporator, ensure high cooling efficiency, low energy consumption, low noise and long service life.
¨ Chilled water temperature range 5℃ to 35℃.
¨ R22 charged, CFC free type R407C, R410A, R404A, R134A for option, high cooling efficiency.
¨ Over sized evaporator and condenser ensure the chiller unit running under 45C high ambient temperature.
¨ Microcomputer control system offering accurate temperature stability within ±1℃.
¨ Low noise and big volume air blower.
¨ Standard equipped Iron pump, stainless steel or high lift pump for option.
¨ Multi-protection devices ensure the chiller unit running safely.
¨ The innovative evaporator-in-tank configuration ensures a steady water temperature offered, as the evaporator also cools the tank itself, reduces ambient heat gain, and increases the efficiency.
¨ KWB Water Cooled Industrial Chiller adopted shell and tube condenser, features speed heat dissipation and high cooling efficiency, it is good to be used in High ambient temperature area with abundant water.
¨ KC Air Cooled Industrial Chiller adopted aluminum fin/copper tube type condenser, easy for cleaning and installation.
¨ Power supply: 1PH 220V/50HZ-----1/2HP to 2HP
3PH 380V/415V 50HZ-----3HP to 60HP
Air Cooled Chiller,Integrated Air Cooled Chiller,Portable Air Cooled Chiller,200 Ton Air Cooled Chiller Shenzhen city KayDeli Refrigeration Equipment Co.,Ltd. , https://www.kaydelichiller.com
Flotation agent for main application of rare earth ore
(1) The research and application of flotation reagents for collector rare earth minerals can be divided into three stages.
Research and application of oleic acid based collector is the first stage, due to the low selectivity of oleic acid, the mineral composition can be applied to a relatively simple ore, and is mainly used in the flotation of bastnaesite.
Research and application of chelating hydroxamic acids collector of the second stage, which is a copper oxide mineral (malachite and chrysocolla), wolframite, perovskites, cassiterite, iron oxide ore, apatite, A good collector for pyrochlore and rare earth minerals.
The third stage is the research and application phase of efficient, new collectors. One of the most important reasons is that it is difficult to separate the two minerals in the mixed rare earth concentrate of bastnasite and monazite because their density, specific magnetic susceptibility, dielectric constant and floatability are very close. This is the case with the Baiyun Obo rare earth mine in China.
At present, the collectors of rare earth minerals mainly include oleic acid, phosphonic acid or phospholipids, alkylsulfonic acids, hydroxamic acids, 802, 804 and H894.
(2) Conditioning agents Adjusting agents include activators of rare earth minerals, inhibitors of non-rare earth minerals (and pH adjusters).
1 Activator Rare earth mineral activator is mainly sodium fluorosilicate, its main role is three: cleaning rare earth mineral surface oxidation film and adhered slime, restore its pure surface, inhibit silicate minerals, enhance the surface of rare earth minerals The activity of the collector.
Since the optimum flotation pH value of rare earth minerals is 8.5-9.5, the dissociation and hydrolysis of sodium fluorosilicate at this time are as follows:
Na 2 SiF 6 =2Na + +SiF 2- 6
SiF 2- 6 =SiF 4 +2F 2-
SiF 4 +4H 2 O=Si(OH) 4 +4HF
Si(OH) 4 = SiO 2 · 2H 2 O
HF=H + +F -
Many of the ions and molecules produced by the above reactions have an inhibitory effect on quartz , feldspar and other silicate minerals.
2 Inhibitors Silicate minerals are the main minerals associated with rare earth minerals, and water glass is a potent inhibitor. It not only inhibits silicate minerals, but also inhibits rare earth minerals and iron minerals. However, in medium alkaline media (pH=8.0-9.5), rare earth minerals have the highest floatability, while other minerals have poor floatability, which can achieve effective inhibition. The main application indicators of water glass in the flotation of rare earth minerals are:
a. The content of the active ingredient, i.e., total content xNa 2 O ySiO 2, typically 40% to 50%;
b. The modulus is m=SiO 2 /Na 2 O (m = 2.0 to 3.0 when the rare earth is floated).
(3) Foaming agent When oleic acid and alkyl hydroxamic acid are used as collectors of rare earth minerals, since they have strong foaming property, it is not necessary to add a foaming agent. With the application of the new collectors H205 and H894, new, highly efficient, nonionic surfactant foaming agents such as 210, J102, H103, etc. have emerged.