The invention relates to a method of adopting microwave method and sitallization to coprocess zinc smelting sludge, and belongs to the technical field of comprehensive utilization of resources and environmental protection. The method of adopting microwave method and sitallization to coprocess zinc smelting sludge comprises the steps of 1, pretreatment; 2, material dosing and blending; 3, recycling of valuable metal; 4, vitrification, 5, sitallization. The step 1 comprises the steps of adopting micro waves to carry out drying on zinc smelting sludge and auxiliary materials respectively, carrying out ball milling and sieving on the dried zinc smelting sludge and the dried auxiliary materials. The step 2 comprises the step of carrying out material dosing and blending on screen underflow. The step 3 comprises the steps of putting the sludge into a microwave reactor, heating the sludge using microwaves and collecting smoke dust produced during the heating process. The step 4 comprises the step of continuing heating on sludge residues in thermal state to realize vitrification of the sludge. The step 5 comprises the step of carrying out sitallization treatment on the residues in thermal state obtained in the step 4. The method of adopting microwave method and sitallization to coprocess zinc smelting sludge puts forward a technology of coprocessing of the microwave method and sitallization, and realizes harmless and resourceful treatment of the zinc smelting sludge with a high efficiency and a low consumption.

Method of adopting microwave method and sitallization to coprocess zinc smelting sludge

The invention relates to a structural gradient tailing glass ceramic material prepared by utilizing microwave heating and a method thereof. Metal tailings are used as a main raw material, a glass sample is obtained after even mixing, melting, casting forming and annealing and is put in a multimode microwave oven, different auxiliary media are longitudinally added around the sample in a segmented mode, and devitrification treatment is performed to obtain the tailing glass ceramic material gradiently distributed in organization structure and performance. The unique advantages of microwave heat treatment are utilized, controllable growth of a glass ceramic crystal is achieved by adopting auxiliary media different in wave absorbing property at different parts of the same material, and the structural gradient tailing glass ceramic material is successively prepared, compact in microscopic structure, fine and small in crystalline grains and uniform in distribution and is conductive to improvement of the overall strength, abrasion resistance property and the like.

Structural gradient tailing glass ceramic prepared by utilizing microwave heating and preparation method thereof

The invention discloses a method for resource utilization of lead and zinc smelting waste. Firstly, lead and zinc smelting waste is subjected to magnetic separation after crushing and ball milling, and iron concentrate and magnetic separation tailings are obtained; then, after ultrasonic activation, the magnetic separation tailings are subjected to bulk flotation, mixed concentrate and flotation tailings are obtained, a newly-developed collector YB-1 is adopted at the time of flotation, and the lead and zinc flotation effect is good; then, the mixed concentrate is subjected to high-temperaturetreatment after microwave activation, valuable metals such as lead, zinc, silver and indium in the mixed concentrate are volatilized to form smoke dust, after collection through a bag collector, lead-zinc concentrate is obtained, the tailings are discharged from the tail portion of a furnace, and mineral powder is obtained after water quenching treatment. The method achieves comprehensive recycling of the lead and zinc smelting waste, iron concentrate, lead-zinc concentrate and the like are obtained, meanwhile valuable elements such as silver and indium are enriched in the lead-zinc concentrate, the technological process is simple, no pollution is caused to the environment, the method is environmentally friendly, the utilization rate of resources is high, and the application prospect is wide.

Method for resource utilization of lead and zinc smelting waste

The invention provides a treatment process of copper, mercury, selenium, lead, gold and silver in a copper smelting lead filter cake. The process mainly comprises following steps of low-temperature high-pressure oxidizing leaching of copper, normal-pressure oxidizing leaching and removal of mercury, replacement of selenium and vulcanization mercury sediment and further comprises rare precious system treatment and electrodeposition copper removal treatment. The treatment process is thorough in copper, mercury, selenium, lead, gold and silver separating effect, the gold, silver and selenium arebasically and completely enriched in the slag phase, the copper recycling rate is about 96%, the leaching rate of mercury is above 90%, and the aim of comprehensively treating valuable elements is achieved.

Treatment process of copper, mercury, selenium, lead, gold and silver in copper smelting lead filter cake

The invention relates to a device for efficiently treating zinc smelting sludge with low consumption, and belongs to the field of zinc smelting sludge treatment equipment. The device for efficiently treating the zinc smelting sludge with low consumption comprises a heating system, a first dust collection system, a second dust collection system and a pipe system. According to the device, the zinc smelting sludge is treated in two heating manners of selecting a silicon carbide micro-wave oven reactor and adopting smoke internal recycle at the same time, a wave-absorbing material is added into the zinc smelting sludge, and therefore the effective availability of heat is effectively improved, the problem that the energy consumption is high during traditional treatment is solved, and discharge of harmful gas is reduced. A lifting stirrer is arranged in the micro-wave oven reactor to stirring the zinc smelting sludge, so that the zinc smelting sludge is even in heating; and a gravity settling chamber with fins and a sinter-plate settling chamber are adopted to be combined so as to form the dust collecting systems, so that efficient collection of valuable metal is achieved, and the efficient, low-consumption and environment-friendly resource utilization of the zinc smelting sludge is achieved.

Device for efficiently treating zinc smelting sludge with low consumption

The invention relates to a method for comprehensive recovery of lead, mercury and selenium in copper smelting acid mud, and belongs to the technical field of comprehensive utilization of solid waste.The method for comprehensive recovery of lead, mercury and selenium in copper smelting acid mud specifically includes the following steps that copper smelting acid mud and a nitric acid solution are mixed at a liquid-solid ratio of 5:1, the stirring rate is 500 r/min, and sodium hypochlorite is gradually added and reacted at normal temperature for 60 minutes to obtain a mixed solution containing mercury chloride and selenic acid; separated filter residues are sent to a lead smelting system for recycling, and sodium hypophosphite is added into filtrate to reduce ionized mercury in the solutionto settleable elemental mercury, after flocculation and sedimentation, the mercury-containing slag is separated by microfiltration, and refined mercury is obtained by continuous rectification and purification; and sodium sulfite is added into the filtrate for reduction to obtain crude selenium, and the wastewater can be returned to the leaching process for recycling after neutralization reaction.The method for comprehensive recovery of lead, mercury and selenium in copper smelting acid mud adopts leaching and sectional reduction to realize effective separation of mercury and selenium, the recovery rate of selenium is 98.7%, and the recovery rate of mercury is up to 98.9%. The operation is simple, the cost is low, and the lead-containing filter residue returning process after leaching canrealize comprehensive utilization of resources.

Method for comprehensive recovery of lead, mercury and selenium in copper smelting acid mud

The present invention relates to a method for harmlessly treating lead and zinc smelting sludge, and belongs to the technical field of metallurgical waste treatment. The method comprises the following steps: 1) introducing the sludge into a microwave field to perform activation treatment, so as to obtain sludge clinker; 2) introducing the sludge clinker upon the activation treatment into a leaching tank and mixing with a diluted acid solution, and after heavy metal ions are dissolved out, obtaining clean mud; 3) washing, filtering, and drying the clean mud obtained in the step 2), so as to obtain clay powder with a moisture content below 10%; and 4) performing ion exchange resin treatment on the dissolved-out heavy metal ions, and then respectively introducing the heavy metal ions into a lead and zinc smelting system, wherein resulting waste acid is returned to the leaching tank and reacted. According to the method provided by the present invention, harmless and reduction utilization of the hazardous waste lead and zinc smelting sludge can be achieved. Meanwhile, the obtained clean mud can be used as a raw material of baking-free bricks and microcrystalline glass. The method is simple and easy-to-implement with many environmental benefits, high production efficiency, low equipment investment, and low energy consumption. The obtained product can be applied to practical production.

Method for harmlessly treating lead and zinc smelting sludge

The utility model relates to a device of zinc smelting mud is handled to high -efficient low consumption belongs to the zinc smelting sludge processing apparatus field, device of zinc smelting mud is handled to high -efficient low consumption include heating system, dust collecting system I, dust collecting system II, pipe -line system, the utility model discloses choose carborundum material microwave oven reactor for use and adopt two kinds of heating methods simultaneous processing zinc smelting mud of flue gas inner loop to add absorbing material in zinc smelting mud, effectively improved thermal availability, overcome the high problem of traditional processing energy consumption, reduced harmful gas's emission. Agitator through set up the liftable at microwave oven reactor stirs zinc smelting mud for zinc smelting mud is heated evenly, the gravity settling chamber who takes the fin through the adoption forms dust collecting system with the combination of sinter -plate deposit room, has realized the high -efficient of valuable metal and has collected, has realized high efficiency, the low consumption of zinc smelting mud, the utilization of environmental protection.

Device of zinc smelting mud is handled to high -efficient low consumption

The invention relates to zinc smelting hazardous waste microcrystalline glass and a preparation method thereof and belongs to the technical field of resource comprehensive utilization and environmental protection. The zinc smelting hazardous waste microcrystalline glass is prepared from 45-70 wt% of hazardous waste and auxiliary materials including 25-40 wt% of SiO2, 3-7 wt% of Al2O3, 3-6 wt% of Na2CO3, 0-5 wt% of nucleation agent and smaller than 5 wt% of others. The preparation method of the zinc smelting hazardous waste microcrystalline glass includes the following specific steps of 1, pretreatment; 2, blending and mixing; 3, vitrification; 4, microcrystallization. Aiming at the problems that the product added value is low and secondary pollution risks and hidden danger exist in the existing zinc smelting hazardous waste treatment and disposal technology, the technology for preparing the zinc smelting hazardous waste microcrystalline glass through a microwave method is provided, and efficient and low-consumption harmless and resourceful treatment of the zinc smelting hazardous waste is achieved.

Wang Xiaoli

Papers

Method of adopting microwave method and sitallization to coprocess zinc smelting sludge

Method for comprehensive recovery of lead, mercury and selenium in copper smelting acid mud

Method for harmlessly treating lead and zinc smelting sludge

Device of zinc smelting mud is handled to high -efficient low consumption

Zinc smelting hazardous waste microcrystalline glass and preparation method thereof