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Mosten Alloy Co., Ltd.

Recovery of valuable metals from tungsten tailings

  • Mosten
  • 15 Jul

There are many useful metals in the tungsten-tail deposit, such as tin, iron, iron, copper, lead, zinc, antimony, iron, cobalt, gold, silver, etc. Some of them are harmful impurities in the tungsten smelting process, and the useful metals can be recovered through the combination of the smelting and metallurgy, so that the quality of the tungsten products can be improved, and the comprehensive utilization rate of the tungsten ore resources can be effectively improved. The valuable metals recovered at present are mainly tungsten, oxygen and sulfur. Recovery of tungsten from tungsten-tungsten tailings The recovery of tungsten from tungsten tailings is an effective way to improve the recovery of tungsten ore. The recovery of WO3 is up to 82.6% from the tungsten tailings and the fine mud by the combination process. The process adopts the coarse flotation-tungsten rough concentrate to directly decompose the tungsten tailings, the fine mud and the immersion slag, and the flotation method used for the tungsten raw ore is promoted to the tungsten tailings, the fine mud and the immersion slag, and the heating and gravity separation processes are simplified to obtain the tungsten rough concentrate of the WO3 grade of 18 percent, The crude concentrate is directly decomposed, and the traditional leaching and microwave leaching processes are compared, and when the same effect is found, the microwave leaching time is 25% of the traditional leaching, and the leaching efficiency is obviously improved. The micro-fine-grained scheelite is recovered from the flotation tailings of scheelite by using the micro-bubble technique, and the flotation column of the CMPT micro-bubble is developed, and the flotation column is ensured to be in a good industrial state by the control of the expert system. The industrial experiment shows that the average grade of the concentrate is 24.52%, the recovery rate is 43.41%, and the water analysis experiment shows that the recovery rate in the 5-38. m The high-gradient magnetic separation is used to recover the wolframite from the tailings of the scheelite. After a rough selection, one-time scavenging and strong magnetic separation show that the strong-magnetic ore containing 0.20% WO3 can obtain the strong-magnetic concentrate of the black-tungsten ore with the WO3 grade of 0.43%, and the recovery rate of the tungsten reaches 73.26%. Recovery of sulfur and sulfur in tungsten-tungsten tailings Many of the tungsten deposits are associated with different degrees of time and time, although some of the tungsten deposits can be recovered during the reselection operation. As a result, the natural floatability of the sulfur and sulfur is good, and it is often naturally floated in the operation of the table of the tungsten gravity to discharge into the tailings, resulting in the comprehensive recovery rate of the waste water and the waste water being low. The flotation process is adopted to directly recover the waste water, the sulfur and the fine mud tailings from the tungsten gravity separation tailings, and then the waste water is directly floated and recovered after the concentrated tailings are concentrated, wherein the grade of the fine mud tailings is 0.024%, the fine grade is 0.019%, the fine mud tailing is 0.056%, the coal grade is 0.044%, The quality of the concentrate is 46.85%, the grade of the concentrate is 23.05%, the total recovery rate of the concentrate reaches 41.34%, and the total recovery rate of the concentrate reaches 32.5%. The method comprises the following steps of: firstly, carrying out mixed flotation and re-separation and floatation of a branch stream, and treating the tailings with the content of 0.018% and 0.029%, so as to obtain the concentrate grade 46.33%, the recovery rate is 67.12%, the grade of the concentrate is 14.80%, and the recovery rate is 86.70%.

Tags :
tungsten