The invention provides a climate compensation energy-saving device for a thermal station. The climate compensation energy-saving device for the thermal station comprises a fixed structure, a storage structure, a storage room, three water valves, heat exchange tubes, a drive structure and a water draining tube, wherein the heat exchange tubes for exchanging heat are spirally distributed inside thestorage structure; the end parts of the heat exchange tubes are connected with the water valves; the cross sections of the heat exchange tubes are of cross structures; the drive structure is fixed tothe storage structure; the drive structure comprises a plurality of stirring rods, a drive rod and a motor, wherein the motors are fixed to the storage structure, the drive rod is rotatably connectedto the motor, and the stirring rods which are distributed in the form of a peripheral array and are used for stirring domestic water are arranged on the drive rod; and the water draining tube is fixedto the storage structure, and extends to a position inside the storage room. The climate compensation energy-saving device for the thermal station provided by the invention has the advantages of being high in heat exchange efficiency and good in geothermal energy resource utilization efficiency.

Climate compensation energy-saving device for thermal station

The invention provides a comprehensive utilization method of tungsten-containing causticization slag. According to the comprehensive utilization method of the tungsten-containing causticization slag,the causticization slag is calcined into calcium oxide; the obtained calcium oxide is used for causticizing tungsten-containing raffinate; the obtained causticization slag is also calcined into calcium oxide again; the calcium oxide is used for causticizing tungsten-containing raffinate again; and therefore, the enriching of tungsten in the causticization slag is formed. After tungsten trioxide inthe causticization slag is enriched to reach a percentage of higher than 1.5%, sodium carbonate is added to the tungsten trioxide to be calcined so that the tungsten trioxide is converted into sodiumtungstate; and CaCO3 is calcined to generate CaO. The calcining slag continues to be used for causticizing the raffinate. The sodium tungstate in the calcining slag can be dissolved in the raffinateto be returned to be continuously used for causticization. Through comprehensive utilization of the comprehensive utilization method of the tungsten-containing causticization slag, the comprehensive utilization of tungsten is realized, follow-up recovery processing of the tungsten is not needed, and possible secondary pollution caused by tungsten loss and tungsten diffusion is avoided.

Comprehensive utilization method of tungsten-containing causticization slag

The invention provides a method for spirally leaching nickel and cobalt. The method comprises the following steps that laterite nickel ore with the particle size of less than minus 4mm is fed into a first screw conveyor; a sulfuric acid solution with the mass concentration of 98% and the weight accounting for 10 to 70% of the weight of the ore is added; ore pulp is stirred and leached in the screwconveyor for 20 to 60 minutes at the rotation speed of 3-18 revolutions per minute to obtain a first-stage leaching solution and first-stage leaching residues; in such way, the multi-stage spiral stirring and leaching are completed; the last-stage leaching solution overflows through the tail end of the screw conveyor, then enters a buffer tank, and is conveyed into the next working procedure forpurification processing; and the last-stage leaching residues are fed into the next working procedure for processing. The leaching and solid-liquid separation of valuable components can be directly completed. The leaching rate of nickel and cobalt is greater than 80%, and thus, the wasting of resources is avoided. The unit consumption of sulfuric acid is less than 60t. The sulfuric acid liquid isnot discharged outwards, which is beneficial to environmental protection. The method solves the problem that the traditional stirring and leaching method easily causes blocking and needs the solid-liquid separation.

Method for spirally leaching nickel and cobalt

The invention relates to a comprehensive utilization technology of by-products in the process of producing APT through WC. The comprehensive utilization technology comprises the following steps: reacting high-temperature carbon dioxide generated in a calcination process with evaporative crystallized ammonia-containing vapor to generate ammonium bicarbonate; replacing solid parts needed to be added, thus reducing the cost and reducing greenhouse effect; calcining causticized slag (the main component is calcium carbonate) to obtain calcium oxide needed for causticizing raffinate (the main component is sodium bicarbonate). In addition, the whole process only needs one-time low pressurization of 0.1 to 0.14 Mpa; all other steps are carried out at normal pressure and the requirements on devicesare not high.

Comprehensive utilization technology of by-products in process of producing APT through waste WC

The utility model discloses a device for continuous countercurrent leaching of grinding waste. The device comprises two countercurrent leaching devices and a solid-liquid separation box, each of the two countercurrent leaching devices consists of an auger motor, a countercurrent cylinder, a feeding pipe, a reaction cone, an auger and a first filter screen; the top of the countercurrent cylinder inthe first countercurrent leaching device is communicated with the reaction cone in the second countercurrent leaching device through a discharge pipe, the top of the countercurrent cylinder in the second countercurrent leaching device is connected with the top end of the solid-liquid separation box through the other discharge pipe, and the packing auger is arranged in the countercurrent cylinder.According to the utility model, the inner conical cylinder is arranged; grinding waste and leaching liquid can be conveniently placed for leaching reaction; and the inner conical barrel can periodically rotate in the outer conical barrel, so that stirring of a reaction solution is achieved, the leaching reaction is fully conducted, through the arrangement of the two sets of countercurrent leaching devices, secondary leaching of the grinding waste is facilitated, and it is guaranteed that metal materials in the grinding waste can be fully extracted.

Device for continuous countercurrent leaching of grinding waste

The invention discloses an ultrafine ammonium paratungstate evaporative crystallization device and a crystallization method The ultrafine ammonium paratungstate evaporative crystallization device comprises an evaporative crystallizer, a first heat exchanger, a second heat exchanger and an ammonium tungstate insulated circulating tank from the left to right or from the right to left, wherein a first steam pipeline and a filtrate return pipe are communicated between the upper part of the evaporative crystallizer and the first heat exchanger; a compressor is arranged on the first steam pipeline;the first heat exchanger and the second heat exchanger are connected through a second steam pipeline; an ammonium hydroxide discharge pipe is arranged in the middle of the bottom of the second heat exchanger, and a circulating pump is arranged on one side of the bottom; an ammonium tungstate insulated circulating tank outlet pipe is communicated between the ammonium tungstate insulated circulating tank and the input end of the circulating pump By utilizing the ultrafine ammonium paratungstate evaporative crystallization device disclosed in the invention, the ammonium tungstate solution in the ammonium tungstate insulated circulating tank is preheated by heat carried by the steam discharged from the evaporative crystallizer, so that the production energy consumption is reduced, and filterpressing is performed in the evaporative crystallization process so as to obtain fine crystals

Ultrafine ammonium paratungstate evaporative crystallization device and crystallization method

The invention relates to a method for carrying out deep chromium removal of chromium-containing sodium tungstate solution. The method comprises the following steps of: firstly measuring a Cr content and a WO3 content in chromium-containing sodium tungstate solution; when the content ratio Cr/WO3 is smaller than or equal to 4.2*10 , carrying out chromium removal by adoption of Na2S solution; andwhen the content ratio Cr/WO3 is greater than 4.2*10 , adding MgSO4 solution to carry out deep chromium removal so as to obtain chromium-removed solution and a magnesium-chromium precipitate. Theinvention also relates to a method for recovering tungsten oxide from the magnesium-chromium precipitate, and the method comprises the following steps of: mixing the magnesium-chromium precipitate with water, carrying out wet grinding, adjusting the alkalinity, and carrying out filtration to obtain leaching solution and a magnesium-chromium filter residue. According to the method, the chromium content in the chromium-removed solution obtained through the technical scheme is reduced to be below the subsequent processing standard, and the recovery rate of tungsten oxide is as high as 96% or above.

Method for carrying out deep chromium removal and tungsten oxide recovery by utilizing co-precipitation of magnesium salt

The invention relates to a method for recycling S in an APT production process The method comprises the following steps of a, secondary adsorption with resin; b, the saturated resin desorption and regeneration; c, primary adsorption with the resin; and d, sulfur recovery, wherein the resin is the weakly alkaline resin According to the method, the polyamine weakly alkaline resin is used, so that the deep molybdenum removal is carried out on a crude ammonium tungstate solution, while the use of a strong oxidant in the desorption process is avoided, so that the severe influence on the service life of the resin is avoided, and the production cost is saved; and meanwhile, by optimizing the technology process, the solution is subjected to two-time resin adsorption by utilizing the desorbedand regenerated resin, so that the purpose of molybdenum removal is achieved, and the content of the molybdenum in the obtained ammonium tungstate solution meets the product quality standard

Ouyang Haibo

Papers

Comprehensive utilization technology of by-products in process of producing APT through waste WC

Device for continuous countercurrent leaching of grinding waste

Ultrafine ammonium paratungstate evaporative crystallization device and crystallization method

Method for carrying out deep chromium removal and tungsten oxide recovery by utilizing co-precipitation of magnesium salt

Method for recycling S in APT production process