CN-117065933-B - White tungsten flotation pH combination regulator and application method thereof

Abstract

The invention discloses a pH combination regulator for scheelite flotation and an application method thereof, wherein the pH combination regulator comprises the following components in percentage by mass of 30% of sodium bicarbonate and 70% of sodium carbonate. The adding method of the pH combination regulator specifically comprises the steps of adding sodium bicarbonate into ore pulp, stirring for 1min, adding sodium carbonate, and stirring uniformly. The pH combination regulator can achieve the purposes of strengthening the recovery effect of the scheelite, improving the mineral separation recovery rate of the scheelite and reducing the production cost.

Inventors

• ZHANG GAOJIE
• Dang Ziping
• WANG YUXIANG
• ZHANG JIAN
• YAO HONGWEI
• LI HAOBING
• YU WANYONG

Assignees

• 洛阳豫鹭矿业有限责任公司

Dates

Publication Date

20260512

Application Date

20230825

Claims (2)

1. 1. The application method of the scheelite flotation pH combination regulator is characterized in that the combination regulator comprises the following components in percentage by mass; the application method of the combination regulator specifically comprises the following steps: (1) Treating the ultralow-grade scheelite to obtain ore pulp, wherein the pH value of the ore pulp is 9-11; (2) Firstly adding sodium bicarbonate into ore pulp, stirring for 1min, then adding sodium carbonate, stirring uniformly, then sequentially adding an inhibitor and a collector, and performing primary roughing and secondary scavenging to obtain scheelite rough concentrate.
2. 2. The method of claim 1, wherein in step (1), the ultra-low grade scheelite is skarn scheelite.

Description

White tungsten flotation pH combination regulator and application method thereof Technical Field The invention relates to the technical field of scheelite flotation, in particular to a scheelite flotation pH combination regulator and an application method thereof. Background In the existing scheelite flotation, a pH regulator generally uses sodium carbonate, a gangue inhibitor uses an inhibitor Y1, a collector uses a fatty acid collector FX-6, because a large amount of calcium hydroxide (slaked lime) is added in scheelite flotation tailings, the pH of backwater in a tailings pond reaches about 12, and high-pH backwater enters a scheelite production process through grinding, so that the pH of ore pulp reaches about 10.5, the scheelite flotation operation is not facilitated, the ore dressing recovery rate is lower, meanwhile, calcium ions in ore pulp are higher, the fatty acid collector in ore pulp is consumed, fatty acid calcium precipitate is generated, and the consumption of the collector is higher. Disclosure of Invention In order to solve the defects in the prior art, the invention provides the pH combination regulator for the scheelite flotation and the application method thereof, and the purposes of strengthening the scheelite recovery effect, improving the scheelite beneficiation recovery rate and reducing the production cost can be achieved through the pH combination regulator. In order to achieve the above purpose, the invention adopts the following specific scheme: The pH combination regulator for scheelite flotation comprises the following components in percentage by mass of 30% of sodium bicarbonate and 70% of sodium carbonate. The method for adding the pH combination regulator specifically comprises the steps of adding sodium bicarbonate into ore pulp, stirring for 1min, adding sodium carbonate, and uniformly stirring. Further, the pH of the pulp is 9-11. The application method of the scheelite flotation pH combination regulator specifically comprises the following steps: (1) Treating the ultralow-grade scheelite to obtain ore pulp; (2) Firstly adding sodium bicarbonate into ore pulp, stirring for 1min, then adding sodium carbonate, stirring uniformly, then sequentially adding an inhibitor and a collector, and performing primary roughing and secondary scavenging to obtain scheelite rough concentrate. Further, in the step (1), the pH of the ore pulp is 9-11. Further, in the step (1), the ultra-low grade scheelite is skarn scheelite. The beneficial effects are that: 1) Improving recovery rate of ore dressing, namely, sodium bicarbonate in pH combined regulator is hydrolyzed to generate Will react with OH - in the pulp, namely: By the chemical reaction, a part of hydroxyl radicals in the ore pulp can be consumed, the pH value of the ore pulp can be slightly reduced, and meanwhile, the hydroxyl radicals are generated in the reaction Can activate scheelite, disperse mineral mud and precipitate harmful metal ions. 2) Reducing the cost of the beneficiation reagent, namely sodium bicarbonate in the same massThe content of the sodium bicarbonate is about 15% higher than that of sodium carbonate, and after the pH combination regulator is used for white tungsten flotation, the overall unit consumption of the regulator is reduced by about 10% compared with that of single sodium carbonate, and the unit price of the sodium bicarbonate is 5% -10% lower than that of sodium carbonate. Drawings Fig. 1 is a flow chart of a scheelite flotation process. Detailed Description The technical solutions of the present invention will be clearly and completely described below in connection with specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. The pH combination regulator for scheelite flotation comprises the following components in percentage by mass of 30% of sodium bicarbonate and 70% of sodium carbonate. The method for performing scheelite flotation by using the pH combination regulator, referring to fig. 1, specifically comprises the following steps: (1) The ultra-low grade scheelite is treated to obtain ore pulp with pH value of 9-11, and the specific treatment method is the prior art and is not repeated here; (2) Firstly adding sodium bicarbonate (the addition amount is 300-400 g/ton of raw ore) into ore pulp, stirring for 1min, then adding sodium carbonate (700-900 g/ton of raw ore), stirring uniformly, then sequentially adding an inhibitor (0-120 g/ton of raw ore) and a collector (180-240 g/ton of raw ore), and carrying out a one-coarse two-sweep process to obtain scheelite coarse concentrate, and carrying out coarse separation, tailing discharging and feeding into a tailing pond; (3) The scheelite rough concentrate ad