11 results about "Tungsten ore" patented technology

This invention discloses a method for treating scheelite beneficiation wastewater based on gradient desiliconization and micro / nano bubble oxidation. The method includes the following steps: adding lime to the scheelite beneficiation wastewater for coagulation and sedimentation; collecting the primary supernatant after sedimentation separation; adding a calcium source for deep desiliconization; introducing micro / nano bubbles for oxidation treatment; removing scum from the upper layer of the water system; and adjusting the pH of the effluent to complete the deep treatment of the scheelite beneficiation wastewater. This method, through the synergistic effect of "gradient desiliconization" and "micro / nano bubble oxidation," can achieve simultaneous deep removal of silicon and organic pollutants from scheelite beneficiation wastewater. The treated effluent is of stable quality and can be directly reused in the tungsten flotation process, realizing closed-loop wastewater recycling and resource utilization. It is highly efficient, economical, has high practical value, and promising application prospects.

The application belongs to the technical field of hydrometallurgy, and particularly relates to a method for solidifying calcium and removing sulfate radicals from tungsten ore calcined by sulfuric acid before ammonia dissolution, which comprises the following steps: S1, obtaining calcium-containing tungsten ore, mixing the calcium-containing tungsten ore with concentrated sulfuric acid, calcining to obtain a calcination product, cooling the calcination product, water immersion, and filtering to obtain a first solid residue and a first filtrate; S2, mixing the first solid residue with water to obtain a first slurry, adding an ammonium salt reagent to the first slurry under stirring to obtain a second slurry after a first reaction, and performing solid-liquid separation on the second slurry to obtain a second solid residue and a second filtrate; and S3, performing ammonia dissolution and filtering on the second solid residue to obtain an ammonium tungstate solution and a third solid residue. The application realizes chemical solidification of calcium ions and efficient separation and removal of sulfate ions by adding an ammonium salt reagent, creates a pure and sulfate-free efficient reaction environment for subsequent ammonia dissolution, and fundamentally guarantees high tungsten recovery rate and product purity.

This utility model relates to a blasting hole positioning device for tungsten mines, belonging to the field of mining engineering equipment technology. This device improves upon the low efficiency of single-point positioning. A mounting base is fixed to the top of a tripod via a screw, and the mounting base has a movable cavity. A screw shaft is connected to the bottom of the mounting shell via a connecting frame. The screw shaft rotates to mount the mounting frame, and a movable plate is fixed to the bottom of the mounting frame. The movable plate is embedded in the movable cavity to achieve fine-tuning of the plane. A positioning plate with a matrix of light-transmitting holes is inserted into the front of the mounting shell, and an illumination lamp is installed inside. Light is projected onto the mine wall through the light-transmitting holes, creating multiple positioning light spots. A screw shaft is threaded to a tightening nut. The bottom of the movable plate has a stop plate and an inclined connecting plate. Tightening the nut pushes the inclined structure to fix the stop plate in place through friction. This device achieves synchronous marking of hole positions through the multi-hole positioning plate, and, in conjunction with the plane adjustment of the movable plate and the angle adjustment of the connecting frame, reduces the number of repeated adjustments. It is mainly used for rapid positioning of blasting holes in tungsten mines.

The utility model discloses a tungsten ore mining is with mineral processing subdivision device relates to tungsten ore mining technical field, the utility model discloses a base still includes: vibration portion, vibration portion installs at the top of base, screening portion, screening portion installs on vibration portion, vibration portion includes vibration subassembly, vibration subassembly sets up at the top of base, drive assembly, drive assembly installs on base, vibration subassembly includes the U -shaped support of setting up at the top of base, and the top inner wall and bottom inner wall of U -shaped support all are fixedly connected with two telescopic links. The utility model discloses a vibration portion, solved the current mineral processing subdivision device in the use process, and material is easy to accumulate on the screen, will directly lead to the effective screening area of screen to reduce, and then reduce the overall screening efficiency and processing capacity, make the output mineral processing product granularity uneven, influence the quality of subsequent mineral processing operation's problem.

This invention belongs to the field of hydrometallurgical technology, specifically disclosing an apparatus and method for semi-continuous alkaline pressure leaching of tungsten minerals. The apparatus includes a vertical pressure leaching vessel, a flash tank, and a compressed air supply system. The inlet of the flash tank is connected to the outlet of the pressure leaching vessel, and the compressed air pipeline is connected to the top of the pressure leaching vessel. After pressure leaching, the pressure inside the vessel naturally drops to 0.3~0.4 MPa. Compressed air is then introduced to force the slurry into the flash tank, rapidly reducing the pressure to atmospheric pressure before discharge. The diameter ratio of the flash tank to a single pressure leaching vessel is 0.7~0.8, and the volume ratio of the flash tank to the total volume of the pressure leaching vessel is 0.1~0.2. This invention combines flash leaching with compressed air-assisted discharge, solving the problems of slow low-pressure discharge and easy clogging caused by the high viscosity and high solids content of tungsten ore slurry. The low-pressure discharge time is reduced from several hours to several minutes, significantly improving equipment utilization, maintaining batch leaching flexibility, and allowing for waste heat recovery. It is suitable for alkaline pressure leaching of wolframite, scheelite, and mixed ores.

This invention belongs to the field of hydrometallurgical technology, specifically disclosing an apparatus and method for semi-continuous alkaline pressure leaching of tungsten minerals in two stages. The method includes: grinding, primary slurry preparation, primary pressure leaching, primary stage of classification and depressurization followed by flash evaporation discharge, secondary slurry preparation, secondary pressure leaching, secondary stage of classification and depressurization followed by flash evaporation discharge, and the secondary pressure leaching solution is returned to the primary slurry preparation for recycling. This invention utilizes a flash evaporation tank and compressed air to assist in discharge, reducing the low-pressure depressurization time from several hours to several minutes, achieving semi-continuous operation; through secondary pressure leaching and secondary pressure leaching solution recycling, the total tungsten leaching rate reaches over 99%, approximately 2 percentage points higher than existing single-stage leaching processes; simultaneously, both stages of leaching are completed using the same apparatus, eliminating the need for additional pressure leaching equipment. This invention is suitable for deep leaching of scheelite and low-grade complex mixed scheelite-black-white tungsten ores, possessing the advantages of high efficiency, low consumption, and environmental friendliness.

This invention relates to the field of exploration equipment, and more particularly to a tungsten ore exploration sampling device. It includes a drilling rig and a rotating rod connected to the drilling rig. This invention achieves the following: through the rotational design of the fixed rod and the rotating rod, the exploration equipment is internally supported in an inverted T-shape within the mine shaft, enabling vertical drilling and sampling of the mine shaft sidewalls; furthermore, by vertically and horizontally fixing the rotating rod internally within the mine shaft, and then axially adjusting the slider along the rotating rod, precise vertical adjustment of the drill rod for sampling is achieved, completing multi-point sampling in both the horizontal and vertical directions of the mine shaft sidewalls, ultimately realizing multi-point grid sampling of the mine shaft sidewalls; and it eliminates the need for manual hand-held drilling for sampling, greatly reducing the labor intensity of workers and improving worker safety during operation.

This application belongs to the field of hydrometallurgical technology, specifically relating to an efficient method for recovering molybdenum during the sulfuric acid-enhanced decomposition of tungsten ore. The method includes the following steps: S1, obtaining tungsten ore, mixing it with concentrated sulfuric acid, and roasting it to obtain a roasting product. The roasting product, by mass percentage, includes: WO3: 10%-60%, Mo: 0.01%-5%; S2, mixing the roasting product with acidic washing liquid to obtain a first mixture. Under stirring conditions, a selective complexing agent is added to the first mixture to induce a complexation reaction, resulting in a second mixture. The second mixture is then subjected to solid-liquid separation to obtain a solid slag and a complexing liquid. The selective complexing agent includes at least one of thiourea and its derivatives or sulfur-containing organic compounds; S3, recovering molybdenum from the complexing liquid. This application, by introducing selective complexation during the washing stage, enriches the complexing liquid with over 98.5% of the molybdenum, while the residual rate of tungsten in the complexing liquid is ≤0.01%, thus solving the problem of molybdenum dispersion and loss in the slag phase and washing water.