10results about How to "Improve leaching efficiency" patented technology

The application discloses a method and system for comprehensively utilizing high-magnesium nickel sulfide ore by a low-temperature oxygen-rich method. The method comprises the following steps: obtaining pre-leaching residue by pre-leaching and magnesium removal with high-magnesium nickel sulfide ore as raw material; obtaining activated ore slurry by mechanically activating the pre-leaching residue; and obtaining a nickel-containing leaching solution by low-temperature oxygen-rich leaching of the activated ore slurry. The application has wide application range, is simple and reliable, easy to control, and low in investment cost, and can convert metals into corresponding products, so that high-magnesium nickel sulfide concentrate can be treated at low cost and high efficiency.

This invention relates to an ultrasonic field-enhanced gas-filled leaching tank, comprising a tank body, a stirring device, a gas filling device, and an ultrasonic generator. The tank body has a leaching chamber with an open upper end. The stirring head of the stirring device is located inside the leaching chamber. The gas filling device includes a gas filling pipe, with its inlet located outside the leaching chamber for connecting to an external gas supply device, and its outlet located inside the leaching chamber. The ultrasonic generator includes an ultrasonic probe, which is disposed inside the gas filling pipe to generate an ultrasonic field enhancement effect when gas is transported through the gas filling pipe. Compared with the prior art, the ultrasonic field-enhanced gas-filled leaching tank provided by this invention enhances the synergistic oxidation of oxidants and non-ferrous metals through ultrasound, achieving rapid and efficient leaching of non-ferrous metals. The advantage of this technology is that ultrasound can generate strong liquid flow shear force and microbubbles, increasing the contact area between the liquid and the metal surface, promoting the reaction between the oxidant and the non-ferrous metals, and improving leaching efficiency.

This invention provides equipment and a process for recovering valuable metals from lithium leaching residue, relating to the field of solid waste treatment technology. The equipment includes an electrically movable frame, an electrically lifting frame, a first treatment tank, a second treatment tank, a drive mechanism, and an acid leaching mechanism. The electrically lifting frame has an electrically adjustable lifting plate installed externally, and the drive mechanism is located on the outer wall of the lifting plate. The drive mechanism includes a fixed plate fixedly installed on the outer wall of the lifting plate, and a first mounting plate and a second mounting plate are fixedly mounted on the outer wall of the fixed plate. This design can automatically switch the rotation direction of the rotating plate and adaptively switch it from a vertical to an inclined posture. It can adapt to the characteristics of low-solids-content fluids. Through adaptive posture adjustment throughout the entire process—from strong vertical mixing in the early stage to uniform inclined suspension in the later stage—it achieves matching of the entire acid leaching process, comprehensively improving the overall leaching efficiency of valuable metals, facilitating subsequent solid-liquid separation processes, and further optimizing the resource utilization of leaching residue and the harmless disposal of solid waste.

This invention provides a leaching method for waste ternary cathode material and its application. The method includes the following steps: (1) mixing waste ternary cathode material with a mixed acid solution, reacting, and separating to obtain filtrate and filter residue; wherein the mixed acid solution is a combination solution of hydrochloric acid and organic acid solution; (2) mixing the filter residue with a detergent, washing, and separating to obtain washing liquid and filter cake; (3) mixing the filtrate from step (1) and the washing liquid from step (2) to obtain leaching solution. This leaching method does not require calcination treatment or the addition of external oxidants or reducing agents. With the synergistic effect of hydrochloric acid and organic acids, it not only simplifies the leaching process, reduces recycling costs, and increases economic benefits, but also avoids the pollution of the environment by valuable metals in waste ternary materials. It efficiently realizes the recycling and utilization of waste ternary cathode material, which is of great significance for the low-cost and high-efficiency recycling of waste batteries and the upgrading of industry technology.

The present application belongs to the field of mineral resources utilization, and particularly relates to a method for extracting potassium from potassium-rich slate, which comprises the following steps: subjecting the potassium-rich slate to low-temperature hydrothermal treatment at a temperature T1 to obtain leaching solution A and leaching residue A; in the low-temperature hydrothermal system, the Ca / Si weight ratio is controlled to be 2.2-3.0; the temperature T1 is 120-200 DEG C; subjecting the leaching residue A and an alkali activator to high-temperature hydrothermal treatment at a temperature T2 to obtain leaching solution B and leaching residue B; in the high-temperature hydrothermal system, the Ca / Si weight ratio is 2.2-3.0; the temperature T2 is 1.1-2 times the temperature T1. In view of the problem of difficulty in extracting potassium from potassium-rich slate, the present application proposes an innovative method: first, subjecting the raw material to low-temperature hydrothermal treatment to change its phase and microstructure, and then cooperating with the subsequent high-temperature hydrothermal process, the two synergistic effects can effectively destroy the crystal structure of the potassium-rich slate, thereby significantly improving the extraction efficiency and effect of potassium.

This invention relates to the field of mineral utilization, specifically to a method for bacterial leaching of high-fluorine-content uranium ore. The method involves crushing the high-fluorine-content uranium ore and packing it into columns or heaps to obtain a ore heap. The ore heap is then sprayed with an acidic solution. The collected leachate is subjected to uranium adsorption treatment, and the adsorption tailings are defluorinated and recycled back to the spraying process. Subsequently, bacteria are implanted into the ore heap. Then, a spray solution containing boric acid and other acids is used for bacterial leaching. The collected bacterial leachate is subjected to uranium adsorption treatment, and the adsorption tailings are recycled back to the bacterial leaching process. This invention can process uranium ore with a fluorine content of 5% or higher while still exhibiting excellent uranium leaching efficiency and effect.

This invention discloses a gold extraction process and system using whole-sludge cyanidation without pre-concentration, relating to the field of gold beneficiation and smelting technology. It solves the problems of low grinding efficiency, complex processes, difficulty in recovering coarse gold particles, and high safety risks in existing processes. The process includes raw ore crushing, primary grinding, gravity separation, hydrocyclone classification, secondary grinding-leaching, leaching-adsorption, smelting, and tailings treatment; the system includes corresponding crushing, primary grinding, gravity separation, hydrocyclone classification, secondary grinding-leaching, leaching-adsorption, smelting, and tailings treatment units. The key innovation is: gravity separation recovers coarse gold particles after primary grinding; the secondary stage uses an azin mill to achieve synergistic grinding-leaching, eliminating the pre-concentration stage; and the filtrate reagents are recycled. This invention features a simplified process, low energy consumption, high gold recovery rate, and safe and environmentally friendly operation, suitable for gold extraction from gold ores containing coarse gold particles that require fine grinding.

The utility model provides an oxygen conveying ultrasonic wave high -efficient leaching control system. Include: oxidation reaction groove, pump unit, valve group, including oxygen valve and steam valve, flowmeter group, pH meter, stirring motor, liquid level meter all are established on oxidation reaction groove, thermometer, be established on oxidation reaction groove, be used for monitoring the temperature of solution in oxidation reaction groove, pressure gauge, be established on high -efficient oxidation generator, be used for monitoring the pressure in high -efficient oxidation generator, central controller is connected with pump unit, valve group, flowmeter group, stirring motor, pH meter, liquid level meter, thermometer and pressure gauge electricity. Utilize above -mentioned system can realize the automatic regulation and control of oxidation reaction groove's feeding state and high -efficient oxidation generator oxygen intake's automatic regulation and control, convenient to the leaching process monitoring, debugging, alarm, stabilize simultaneously feeding, the accurate control of oxidation reaction groove's pH value and temperature value, high -efficient oxidation generator oxygen intake's accurate control and pressure monitoring.

This invention provides a nickel-cobalt hydroxide slurry leaching apparatus and method. The nickel-cobalt hydroxide slurry leaching method includes: separately conveying nickel-cobalt hydroxide material and a mixed liquid to a slurry preparation tank for slurry preparation to obtain a homogenized slurry; subsequently, leaching the homogenized slurry to obtain a leachate, and recirculating a portion of the leachate back to the slurry preparation process; the slurry preparation includes sequential primary and secondary agitated slurry preparation, with the primary agitated slurry preparation rate being lower than the secondary agitated slurry preparation rate; the liquid-to-solid ratio in the slurry preparation tank is (1~1.5):1. This invention achieves high-speed, continuous slurry preparation by optimizing the slurry preparation process and process parameters, greatly improving the uniformity and stability of the slurry.