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How to recover tungsten and ammonium chloride from APT mother liquor? The researchers proposed a new type of recycling method of ammonium paratungstate mother liquor. The method is simple to operate, consumes a smaller amount of chemical reagents, has lower operating costs, and has a higher recovery rate of tungsten than traditional methods. In addition, the separated ammonium chloride solution can be new_ed to or used for other purposes after proper purification. More details, please visit: http://ammonium-paratungstate.com/index.html A Method for…

Thermal decomposition process of ammonium paratungstate has attracted much attention of researchers as it is an important raw material for preparing tungsten oxide (by calcining APT), and tungsten oxide is an important raw material for preparing tungsten powder by hydrogen reduction, and tungsten powder is an important raw material for preparing tungsten electrode by powder metallurgy. More details, please visit: http://ammonium-paratungstate.com/index.html Studies have shown that, there are four stages of the thermal decomposition process of ammonium paratungstate. The first three…

How to prepare high purity ammonium paratungstate? The researchers proposed an economical method for preparing high purity ammonium paratungstate with high yield and simple process. More details, please visit: http://ammonium-paratungstate.com/index.html A Preparation Method of High Purity Ammonium Paratungstate Pour 215 L of deionized water in a heated 200 L stirred reactor. Add 200 kg of APT·10H2O with stirring. Then, the suspension was treated at 90 °C for 2 h with stirring. When the molar ratio of NH3: W is 0.77:…

Tungsten heavy alloy shield is made with high tungsten content and low amounts of Ni, Fe or Ni, Cu. Some tungsten alloy shields are added Co, Mo or Cr, etc. The density of tungsten heavy alloy could be as high as 16.8-18.8g/cm3. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html Tungsten heavy alloy offers a number of advantages as a radiation shielding material for medical applications: 1. Good corrosion resistance under ambient conditions. 2. Low toxicity and completely lead-free. 3. Superior radiation attenuation…

Tungsten alloy post-patient collimator is present between the patient and the detector on a CT machine, which serves to ensure good image quality, minimize the interference of scattered rays from other directions, and to reduce unnecessary radiation doses for the patients. Tungsten alloy post-patient collimator improves the slice sensitivity profile by giving a more rectangular shape. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html There are a lot of tungsten alloy leaves on a collimator. And these leaves are evenly distributed. So it…

Tungsten alloy pre-patient collimator is the tungsten alloy collimator located in front of the X-ray tube on a CT machine, with characteristics of high density, smooth surface and good dimensional accuracy. Tungsten alloy pre-patient collimator is the first component through which X-rays pass, and is mainly used to control the thickness of the scanning layer by controlling the width of the X-ray beam in the direction parallel to the long axis of the human body. The X-rays emitted from the…

How to choose tungsten carbide thread milling cutter? Tungsten carbide thread milling cutters have two main types: single-row thread milling cutters and multi-row thread milling cutters. And there are different shanks including hydraulic shanks, spring shanks and hot tension shanks. More details, please visit: http://www.tungsten-carbide.com.cn/tungsten-carbide-blade-bar.html Firstly, take their applications in to account. The two types of tungsten carbide thread milling cutters have different applications. Tungsten carbide single-row thread milling cutter is used to process medium to large internal threads, or…

Under epidemic of novel coronavirus pneumonia, demand for 3D printing tungsten alloy radiation shield for applications in CT device is increasing. In order to support the demand for CT examination during the epidemic of COVID-19, some manufacturers are increasing the output of 3D printing tungsten alloy anti-scattering grids required for medical imaging equipment such as CT scanners, according to reports. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html Studies have shown that tungsten alloy is the optimum choice for producing radiation shields as…

Medical tungsten alloy radiation shield has a wide application in absorbing and guiding radiation for clear CT images, and for protecting patients from excess X-ray or γ ray radiation. And it is attributed to the advantages of tungsten alloy. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html Advantages of Medical Tungsten Alloy Radiation Shield 1. High density: density up to 18.8g/cm3. 2. Strong X-ray shielding ability: With the same thickness, the X ray shielding ability of tungsten alloy is more than 1.7 times…

Tungsten alloy shielding is an important protective part on radiotherapy equipment. It has been reported that tungsten alloy shield has high density (~18.8g/cm3), excellent X-ray and gamma-ray absorption capabilities, and good workability. Therefore, it is an ideal protective component in cobalt-60 treatment machine, medical electron linear accelerator and other radiotherapy equipment, to provide excellent radiation protection and beam guidance. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html The cobalt-60 treatment machine is a long-distance radiotherapy device with gamma source. Cobalt-60 is used as…