7results about How to "Maximize recovery" patented technology

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

This invention relates to a dynamic optimization decision-making model for the mining sequence of polymetallic symbiotic ore bodies, comprising an edge layer, a cloud platform, and a control terminal. The edge layer, cloud platform, and control terminal interact through dedicated interfaces, achieving a closed-loop process from data acquisition, processing, decision-making, to execution. The edge layer acquires ore body data in real time via a multi-source sensor network, preprocesses it through an edge computing terminal, and then uploads it to the cloud platform. The cloud platform uses a dynamic geological model engine to construct a real-time 3D ore body model and generates a Pareto optimal mining scheme that comprehensively considers economic, environmental, and safety factors through a multi-objective optimization engine. The control terminal uses a digital twin console to visualize the scheme and allow for manual intervention, while the equipment control system automatically executes mining commands. The model supports hourly dynamic updates, significantly improving resource recovery rate and decision-making efficiency, reducing environmental costs and mining risks, and achieving efficient, intelligent, and green mining of polymetallic symbiotic ore bodies.

The invention discloses a method and a system for directionally removing non-volatile acid radicals and recovering urea in high-concentration urea wastewater, and belongs to the technical field of wastewater treatment and resource recovery. The method comprises the following steps: firstly, introducing wastewater into a pretreatment unit, adding a synergistic treatment agent compounded by alkali metal salt, an organic complexing agent and nano catalytic particles, and directionally precipitating non-volatile acid radicals to form a compact precipitate; intensified solid-liquid separation is completed through an ultrasonic-assisted horizontal spiral discharging sedimentation centrifuge, residual acid radicals in supernate are deeply adsorbed through graphene quantum dot-temperature responsive magnetic nanoparticle composite modified anion exchange resin, and the acid radicals are almost completely removed; then, urea is concentrated by adopting a low-temperature evaporation-waste heat recovery coupling process, and high-purity urea crystals are separated out through segmented temperature-pressure gradient crystallization; the resin saturated by adsorption is separated and recovered through a magnetic field, and is recycled after temperature regulation and mild regeneration; the method is suitable for resourceful treatment of industrial high-concentration urea wastewater.

The utility model belongs to energy -conserving technical field relates to a data center waste heat recovery device. The device contains at least one heat exchange - refrigeration integrated module, each heat exchange - refrigeration integrated module includes heat exchange module, is provided with air - liquid cooling heat dissipation module in the upside and downside of heat exchange module, is equipped with high temperature liquid flow path for heat exchange cooling of high temperature liquid from heat source in heat exchange module, air - liquid cooling heat dissipation module is equipped with low temperature liquid flow path for heat exchange heating of low temperature liquid from main heat dissipation module, high temperature liquid flow path connects liquid storage pump tank and supplementary heat dissipation module in proper order through pipeline, and supplementary heat dissipation module is connected with heat source, heat exchange module and air - liquid cooling heat dissipation module are installed heat - electric refrigeration piece, when the temperature difference exists in high temperature liquid flow path and low temperature liquid flow path, voltage is produced between the positive and negative ends of heat - electric refrigeration piece, and heat - electric refrigeration piece is connected with voltage - reducing rectifier. The problem that the seasonality of existing data center waste heat recovery mode is strongly dependent has been solved.

This invention relates to the field of vehicle technology, specifically to an auxiliary braking method and system for a pure electric off-highway wide-body dump truck. The method involves acquiring vehicle information; determining whether the drive motor speed exceeds a first threshold based on the vehicle information; if so, entering emergency braking mode; otherwise, determining whether auxiliary braking is engaged; if auxiliary braking is not engaged, control ends; if auxiliary braking is engaged, determining whether the auxiliary braking is in braking or constant speed mode. This invention can automatically adjust the regenerative braking torque of the drive motor and the braking torque of the hydraulic retarder to meet the braking torque and speed requirements of the pure electric off-highway wide-body dump truck under normal operating conditions (flat roads / gentle slopes) and long downhill conditions (especially steep slopes of 15% to 50%), while also meeting the limitations of the power battery charge and drive motor temperature, thus maximizing energy recovery.

The invention relates to the technical field of electric power-assisted two-wheeled vehicles, and particularly provides a composite energy storage system of an electric power-assisted two-wheeled vehicle. Comprising a composite energy storage device in which battery energy storage and hydraulic energy storage are connected in parallel, and a pendulum type slope recognition device. The gradient recognition device amplifies the pendulum angle through gear transmission and is matched with an infrared proximity switch to recognize gradient changes from 0 degree to 20 degrees with 3 degrees as the unit. The system controller executes intelligent switching according to the identified road condition, the hydraulic system pressure and the battery SOC: hydraulic energy storage is preferentially carried out during downhill or slow braking, and the system controller is switched to battery energy storage after the energy storage is full; hydraulic energy assistance is released preferentially during uphill, and is supplemented by a battery when insufficient; and meanwhile, whether energy is recycled or not is judged according to braking deceleration, and gradual change assistance is provided during starting. Through the design, efficient recovery and intelligent release of energy under different road conditions are achieved, and the energy recovery rate and the driving range of the electric power-assisted two-wheeled vehicle are remarkably improved.

This utility model relates to the technical field of oil equipment remanufacturing, and discloses a hot rolling device for remanufacturing waste sucker rods. It includes two opposing fixed plates. A housing is fixed to the outer side of one of the fixed plates. A worm gear body is located at the transverse center of the inner wall of the housing. The worm gear body is controlled to rotate by a drive motor. Worm wheel bodies are provided on the upper and lower sides of the worm gear body for meshing and transmission. A connecting rod is fixed to the side of the worm wheel body near the fixed plate. This hot rolling device for remanufacturing waste sucker rods allows for the replacement of rollers through an adjustable roller assembly, enabling adjustments according to the size requirements of different waste sucker rods. This provides greater flexibility to the production line, allowing it to handle sucker rods of various sizes and specifications.