57 results about "Potash" patented technology

The invention discloses a short-distance multi-ore-bed potassic salt ore large-section long-strip comprehensive mechanized mining method, and belongs to the technical field of potassic salt ore deposit mining. The method comprises the steps that a centralized transportation roadway is arranged on an upper head mining layer, an auxiliary transportation roadway is arranged in a stable salt rock interlayer between ore layers, and combined development is achieved; arranging large-section long strip chambers in the ore blocks along the inclination direction, and reserving permanent spacing strip pillars to maintain the stope to be stable; a chamber is cut and formed at a time by a double-arm large-mining-height mining machine, and efficient stoping is realized by matching with a continuous transportation system; multiple ore beds are mined in a coordinated mode from top to bottom in sequence, and the ore block air return way and the ore block air return way of the upper ore bed are staggered by 20 m or above so as to avoid stress superposition; a full-air-pressure ventilation system combining a press-in type and a draw-out type is constructed; natural supporting is achieved through permanent spacing strip pillars and natural top and bottom plates, safety is guaranteed through a micro-seismic and top plate monitoring system, and the goaf is backfilled with tail salt slurry to achieve green mining. According to the method, safe, efficient and high-recovery-rate mining of the short-distance multi-ore-bed sylvite ore is achieved.

The invention provides a sylvite flotation reagent dosage dynamic control method. The sylvite flotation reagent dosage dynamic control method comprises the following steps that at least one ore pulp parameter and at least one foam image characteristic parameter of a sylvite flotation system are collected in real time; dynamically calculating a flotation reagent dynamic response coefficient required at the current moment based on the collected real-time parameters; according to the dynamic response coefficient of the flotation reagent, the adding amount of the flotation reagent is adjusted in real time; according to the method, the multi-dimensional key parameters are collected in real time, the dynamic response model integrating multi-parameter coupling, historical efficiency accumulation and process time delay correction is constructed, accurate and real-time adjustment of the drug dosage is achieved, meanwhile, the method has the model self-adaptive calibration capability, and the problems that in the prior art, control precision is low, and adaptability is poor are solved.

The invention discloses a solid potassic salt mine underground screening and crushing integrated ore storage bin system, and belongs to the technical field of solid potassic salt mine mining. The system is composed of a roadway type raw ore bin, a feeding chamber and a vertically-arranged screening and crushing chamber. The raw ore bin is communicated with the main transportation roadway and is internally provided with a bulldozer; the feeding chamber is provided with a surge bin and a screw feeder; a linear vibrating screen and a double-geared-roller crusher are arranged in the screening and crushing chamber. The core of the method is that oversize coarse grain materials are returned to a surge bin through an oversize transfer belt conveyor to form closed-loop crushing circulation, and it is ensured that the ore removal granularity is smaller than or equal to 20 mm. The problem that sylvite ore is prone to deliquescence and hardening is fundamentally solved through the roadway type ore storage bin, underground storage, screening and crushing integrated operation is achieved, the ore directly enters an ore dressing, decomposing and crystallizing workshop after being lifted to the ground, the ground ore dressing links are reduced, occupied ground sites are reduced, the working efficiency and the system reliability are improved, and the production cost is reduced. The method is especially suitable for efficient mining of deliquescent solid potassic salt ore.

The invention provides a potassium-dissolving bacteria-iron-based potassium-containing nano material and a preparation method thereof, and belongs to a bio-fertilizer technology, and the preparation method comprises the following steps: dispersing soluble iron salt in water to obtain a solution A; dispersing a soluble phosphoric acid source and potassium salt in water to obtain a solution B; dispersing a stabilizer in water to obtain a solution C; simultaneously dropwise adding the solution A and the solution B into the solution C at the same speed, controlling the pH value to be 2.5-4.0 through alkali liquor, stirring for reaction, standing and aging to obtain the iron-based potassium-containing nano material; inoculating potassium-dissolving bacteria into a liquid culture medium, and carrying out enlarged culture to obtain a bacterial suspension; and mixing the bacterial suspension with the iron-based potassium-containing nano-material to obtain the potassium-dissolving bacteria-iron-based potassium-containing nano-material. The iron-based potassium-containing nano-material contains potassium, the iron-based potassium-containing nano-material and the potassium-dissolving bacteria act together to form a dual potassium supply mechanism that the potassium-dissolving bacteria decompose soil potassium and the iron-based potassium-containing nano-material releases potassium, and the effect is far better than that of single use of a microbial inoculum or a common potash fertilizer.

The application discloses a construction method for rapid excavation of a potassium salt mine, and comprises the following steps: excavation branch roadway planning, excavation preparation of a first area, excavation of the first area, excavation preparation of a second area, excavation of the second area, excavation preparation of a third area, excavation of the third area, and after the completion of the excavation operation, repeating the above steps to move to the next excavation face for excavation. The application solves the problems of discontinuous post-excavation transportation, difficult and long period of moving and inverting the face, realizes rapid excavation of the roadway, rapid transportation of materials and rapid moving of equipment, and improves the excavation efficiency of the whole mining area.

The invention discloses a method for recovering vegetation of a mildly-degraded Coilin grassland. The method comprises the following steps: S1, investigating plant community characteristics and biomass; s2, determining the quality of the forage grass in the plant community; s3, collecting a soil sample; s4, reseeding: grass seeds are reseeded on the mildly degraded Coilin grassland, the reseeded grass seeds are agropyron perennioides and adsura adsura, and the mass ratio of the agropyron perennioides to the adsura adsura is (6-8): (2.5-3.5); the reseeding amount is 10-20 kg / hm < 2 >; s5, fertilization: applying a fertilizer bag, the fertilizer bag being a nitrogen-phosphorus-potassium mixed fertilizer, the nitrogen-phosphorus-potassium mixed fertilizer comprising a nitrogen fertilizer, a phosphorus fertilizer and a potash fertilizer, according to the plant community conditions of the mildly degraded Coilsein grassland, through reseeding and reasonable fertilization, the monoennial and biennial plants, perennial gramineae, hybrid grass and perennial leguminous plants of the Coilsein grassland can all grow, the yield of the Coilsein grassland is increased, and the yield of the Coilsein grassland is increased. And the pH value of the soil tends to be neutral, so that the mildly degraded Coilin grassland vegetation is recovered.

A fertiliser product comprising potassium sulfate (sulfate of potash or “SOP”) and boron, wherein the amount of boron is equivalent to 0.2 to 3.0 wt. % B.

A water interception trench structure and construction method suitable for waterproofing the exterior of potash mine shafts are disclosed. The structure includes a shaft and a shaft wall, and further includes an embedded water storage bag, a water supply pipe, a water storage box, a water outlet pipe, a wall base, and an observation cylinder. The embedded water storage bag is located on the side of the shaft wall and below the soil water level to collect water flowing downwards from the soil layer through the outer wall of the shaft. The water storage box is located inside the wall base. The bottom of the embedded water storage bag has a water outlet hole. One end of the water supply pipe is connected to the water outlet hole and the other end is connected to the water storage box. One end of the water outlet pipe is connected to the water storage box and the other end is connected to the observation cylinder. The observation cylinder is installed on the side of the shaft wall near the shaft. The embedded water storage bag and the shaft wall are integrally cast with concrete, the water storage box and the wall base are integrally cast with concrete, and the wall base and the shaft are integrally cast with concrete. This invention has the advantages of simple construction, accurate monitoring, reusability, and cost savings, and has wide applicability and promotional value in the field of waterproofing potash mine shafts.

This utility model relates to an online automatic sampling concentration identification system for potash fertilizer. Each first inlet pipe is equipped with a sampling pump. The inlet of the first inlet pipe is connected to an external sampling pool, and the outlet of the first inlet pipe is connected to a main inlet. A camera is positioned to target the detection container. A main cleaning valve is installed at the outlet of the main cleaning pipe. The inlets of two or more cleaning branch pipes are connected to the main cleaning pipe, and the outlet of each cleaning branch pipe is connected to the cleaning port of one of the first inlet pipes. This technical solution uses two or more first inlet pipes and corresponding sampling pumps, allowing potash fertilizer samples from different sampling pools to sequentially enter the detection container for photographing and detection. The automated control is more intelligent, reducing manual intervention and improving sampling efficiency. Furthermore, a cleaning module is included to clean the inlet pipes and sampling pumps, preventing blockage caused by potash fertilizer crystallization after long-term use.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a xylitol and microorganism synergistically chelated liquid fertilizer and a preparation method thereof.The xylitol and microorganism synergistically chelated liquid fertilizer is prepared from, by mass, 5%-15% of xylitol, 1%-5% of functional microorganism strains, 3%-8% of nitrogenous fertilizer, 2%-6% of phosphate fertilizer, 4%-10% of potash fertilizer, 5%-15% of medium trace element fertilizer, 2%-3% of blood protein peptide, 3%-5% of glutamic acid, 3%-5% of mineral source potassium humate, 0.5%-2% of biological stabilizer and the balance water. And the balance of water. Wherein the xylitol, the functional microbial strain, the nitrogen fertilizer, the phosphorus fertilizer, the potassium fertilizer, the medium trace element fertilizer, the blood protein peptide, the glutamic acid and the mineral source potassium humate form a complex.

The invention discloses a potassium sulfate fertilizer preparation method, and particularly relates to the technical field of potassium sulfate fertilizer preparation, and the method comprises the following steps: mixing potassium feldspar mineral powder with a specific composite catalyst, introducing the mixture and pretreated sulfur dioxide-containing industrial tail gas into a fluidized bed reactor, and carrying out catalytic oxidation-sulfation reaction at 380-430 DEG C to obtain the potassium sulfate fertilizer. And separating, leaching, crystallizing and drying the solid product to obtain a final product. According to the method, tail gas treatment and mineral resource utilization are combined, waste is treated with waste, the process conditions are mild, the prepared potassium sulfate product is high in purity and low in chlorine content and has excellent anti-caking and anti-moisture-absorption physical stability, and meanwhile efficient conversion of sulfur dioxide and high-yield extraction of potassium resources are achieved.

A roller press comprising including a roller face defining a plurality of individual reliefs shaped and sized to compress feed material into a plurality of discrete briquettes, each of the individual reliefs defining a quadrilateral shaped depression having rounded corners to reduce stress concentrations in the resulting briquettes, wherein a pair of leading edge rounded corners are defined by a first radius and a pair of trailing edge rounded corners are defined by a second radius, the first radius being smaller than the second radius.

The invention discloses a composite soil conditioner, which is prepared from the following ingredients in parts by weight: 30 to 40 parts of calcium superphosphate, 20 to 25 parts of powdery humic acid, 20 to 25 parts of fulvic acid metal complexes, 10 to 25 parts of jarosite and 5 to 8 parts of lignosulfonate. The invention also provides a preparation method and application of the composite soil conditioner. The invention provides a composite soil conditioner and a preparation method and application thereof, jarosite is introduced as a potash fertilizer slow-release carrier, lignosulfonate is added as a bonding and dispersion medium, the composite soil conditioner can realize continuous release of potassium ions, and meanwhile, the potassium ions can be continuously released. After the potassium is released, a residual mineral skeleton and calcium ions and organic matters in the soil generate a cementation effect to jointly promote the formation of a water-stable aggregate structure, so that the synergistic improvement of potassium slow-release supply and soil structure construction is realized.

The application provides a double cutter disc angle adjustable structure, method and full-face tunneling machine suitable for potash salt mine, and relates to the technical field of full-face mechanized mining equipment for solid potash salt mine and other sedimentary layered deposits. The structure comprises two cutter disc assemblies arranged symmetrically left and right, wherein the output end of a main cutting gear box is rigidly connected with the cutter disc; a driving assembly is arranged on the frame of the full-face tunneling machine and is connected with the main cutting gear box; the two ends of an angle adjusting mechanism are respectively connected with the frame and the side wall of the main cutting gear box, and are used for driving the main cutting gear box to rotate around the vertical central axis thereof relative to the frame, so that the cutter disc is inclined outward relative to the tunneling direction in the horizontal plane; and the structure further comprises a controller which is respectively connected in communication with the driving assembly and the angle adjusting mechanism. The double cutter disc is inclined to form a certain outward inclination angle, the active cutting of the ground stress chain and the stress dimension reduction are realized, the rock breaking specific energy is reduced, and the cutting efficiency is improved.

The application discloses a method for preparing potash magnesium fertilizer by using potassium salt sylvite, and comprises the following steps: (1) adding raw materials; (2) stirring and converting by heating; (3) separating mother liquor by belt vacuum filtration and keeping warm; (4) cooling and crystallizing the mother liquor by heating; (5) ore flotation; (6) product washing and drying; and (7) tailing treatment. + , Mg 2+ , SO4 2‑ resources to a tailing pond, resulting in resource loss; or the fine crystals of bloedite are precipitated by cooling in the flotation process of the mother liquor by heating, the flotation environment is deteriorated, the concentrate quality is reduced, and filtration is difficult, so that fine treatment of resources is realized; the method is simple, the problem of difficult conversion of the potassium salt sylvite is avoided, the product quality is good, the production efficiency is high, the resource utilization rate is high, and the economic benefit is good.

This application discloses a method for backfilling mining of solid potash mines, belonging to the field of mining engineering technology. The method includes: arranging preparatory work; collecting rock mechanics parameters of the potash ore body and determining the mining method design based on these parameters; the rock mechanics parameters include the instantaneous compressive strength of the surrounding rock, the ore body integrity coefficient, and the allowable subsidence of the roof and floor; the mining method design includes mining sequence design, goaf backfilling design, and mining safety factor correction design. This application achieves a balance between mining efficiency and economic efficiency under the premise of safe mining by independently assessing the safety of three main rock mechanics parameters of potash mines and designing the corresponding steps separately based on the independent assessment results. This provides a safe and economical mining process design method for the special geological conditions of potash mines.

The invention relates to the technical field of fertilizer manufacturing, in particular to a slow-release fertilizer for corn planting and a preparation method of the slow-release fertilizer. The problems of supply and demand dislocation of nutrients of the slow-release fertilizer and soil hardening are solved. The slow release fertilizer for corn planting sequentially comprises fertilizer particles, an inner layer film and an outer layer film from inside to outside, the preparation method comprises the following steps: mixing the urea, the phosphorus-potassium fertilizer, the aminated modified charcoal and the lanthanum-doped nano-hydroxyapatite, and granulating; the inner layer is sprayed with a lignin-acrylic acid copolymer, and the outer layer is coated with sodium alginate loaded with bacillus subtilis at low temperature; by utilizing biochar amino chemical adsorption and nitrogen locking and responding to a rhizosphere acidification mechanism through an inner membrane, accurate and rapid release of nutrients in a corn trumpet period is realized, and the fertilizer utilization rate and the crop yield are improved in combination with rare earth root promotion and microbial soil loosening effects.

The potassium feldspar powder purification and iron removal device comprises a machine shell, a cleaning mechanism is installed at the top end of the inner wall of the machine shell, a scrubbing mechanism located at the bottom end of the cleaning mechanism is installed on the machine shell, limiting plates are fixedly installed in the middles of the two sides of the inner wall of the machine shell, and a filter plate is arranged at the top end between the two limiting plates; according to the process, an intelligent nano magnetic liquid technology is adopted to replace a traditional flotation agent, nano magnetic liquid is recycled, and the process is low in cost and environmentally friendly; according to the technology, multiple times of magnetic separation are not needed, the purpose of one-time iron removal is achieved by intelligently regulating and controlling the strength of an external magnetic field according to the magnetism of different substances in raw ore, the technology is simplified, the iron removal efficiency is improved, and the quality of the potassium feldspar powder is improved; the process is mainly designed for high-iron-content potassium feldspar, a scrubbing machine is added for scrubbing, and thin-film iron on the surface of the potassium feldspar is removed; the process discriminates the magnetism of minerals, intelligently regulates and controls the intensity of the magnetic field, and is high in intelligent degree.

The invention provides a method for concentrating potassium alkali through membrane distillation, and aims to solve the technical problems of high energy consumption and heat efficiency bottleneck in the existing multi-effect evaporation technology. The method for concentrating potassium alkali by membrane distillation comprises the following steps: S10, pretreatment: filtering an initial potassium alkali solution and regulating pH and temperature; s20, membrane distillation and pulse flow operation are conducted, and efficient evaporation separation of water is achieved through low-grade heat energy; s30, seed crystal induction and product extraction are conducted, preliminary crystallization of a supersaturated solution is generated in the membrane distillation system, microcrystal nucleuses are generated, the crystal nucleuses are introduced into the step S20, and crystal mush is produced; and S40, fractional crystallization and solid-liquid separation: further concentrating and separating crystal mush from the membrane distillation system to obtain potassium alkali solid. And S50, periodic cleaning is conducted, when the flux of a certain stage in the step S20 is attenuated to 80% of the initial flux, cleaning is conducted, and acid washing, alkali washing and flushing are conducted in sequence. According to the method, low-grade heat energy is adopted during membrane distillation, and pulse flow operation is utilized, so that energy consumption is reduced, and heat efficiency is improved.

Methods for cavern rubblization for enhanced potash recovery are disclosed. In embodiments, such a method includes pressure cycling. The method can include pressurizing a cavity to maximum flow capacity followed by rapid relief of the cavity pressure. In this embodiment, this cycle of pressurization and rapid relief is repeated several times. Other embodiments of cavern rubblization and methods for enhanced potash recovery, a technique of fluid pulsing is used. According to embodiments, a tool can be used to pulse pressure through clay seams to be wetted. According to both embodiments, these methods increase potash recovery during mining.

This invention belongs to the field of mineral exploration technology, specifically a method for exploring deep brine potash deposits in basin areas. The specific steps of this method are as follows: preliminary preparation and basic geological survey of multiple basins; extraction of common mineralization patterns from multiple basins and construction of a general mineralization framework; individual adaptation for single basins and preliminary delineation of favorable mineralization areas; multi-method geophysical exploration and precise screening of favorable areas; drilling verification and optimization of mineralization models; and summary of results and promotion of the multi-basin exploration model. Through the core logic of commonality extraction, individual adaptation, and precise verification, this application not only builds a general mineralization geological framework applicable to different basins, solving the problem of the lack of a general model, but also adapts to the differences in mineralization conditions of different basins by adjusting parameters of single basins.

The invention provides a production system and method capable of realizing sylvite mineral monomer dissociation, and relates to the technical field of potash fertilizer production, and the production system comprises a sylvite mineral pretreatment system, a decomposition crystallization system and a sylvite dissociation system. Equipment of the sylvite mineral pretreatment system comprises a primary crusher, a screening machine and a secondary crusher. The decomposition crystallization system comprises a decomposition crystallizer, a fine grain dissolving tank and the like. The sylvinite dissociation system comprises a vibrating screen, a fine crusher, a size mixing tank, a medicament reaction stirring tank, a machine pump and the like. Targeted step-by-step dissociation measures are adopted according to the characteristics of the sylvite minerals, the sylvite mineral handling capacity and the potassium recovery rate are improved, the operation cost is reduced, the mining service life is prolonged, equipment abrasion is reduced, the overhaul frequency and energy consumption are reduced, and the flotation environment is improved.

This invention provides a hot potassium alkali desorption device and method. The method involves passing a hot potassium alkali solution that has absorbed CO2 gas through a desorption tower, where it is heated by steam to desorb the CO2. The device includes a hot potassium alkali desorption tower, a reboiler at the bottom of the tower, an evaporator at the top of the tower, a steam compressor, and a steam / condensate flash tank. This application uses water as a medium to recover heat from the top of the tower in the evaporator. The generated steam is compressed, and the high-temperature, high-pressure steam is either directly fed into the bottom of the tower for stripping or indirectly fed into the reboiler for heating. Simultaneously, an acidic catalyst is used as packing material inside the tower to catalyze and accelerate CO2 desorption, reducing the energy consumption of hot potassium alkali desorption and decreasing the consumption of refrigerant at the top of the tower and the heat source consumption of the reboiler at the bottom of the tower.

The invention relates to a process for extracting high-purity potassium chloride (KCl) from a carnallite ore (KCl.MgCl2.6H2O) associated with halite (NaCl). The process starts with selective dissolution, prioritising KCl and MgCl2, due to the addition of water at room temperature. Two basification steps follow, involving the addition of potassium hydroxide (KOH) to the solution obtained after dissolving the ore. The first addition makes it possible to extract all of the Mg2+ ions in the form of magnesium hydroxide (Mg(OH)2), an upgraded product. The second addition of KOH seeks to convert all the NaCl into potassium chloride (KCl) and sodium hydroxide (NaOH). This second addition of KOH is carried out in excess to promote the formation of the desired products during the following two crystallisation steps. After the chemical transformations of the mineral solution, a concentration step is undertaken to vaporise the water, thereby promoting the crystallisation of the potassium chloride (KCl). A second concentration is followed by cooling in order to form the solid sodium hydroxide (NaOH). The water vapours generated in the two concentration steps are liquefied by cooling to be recycled. The three solid products resulting from the process are dried to remove moisture, thereby complying with market requirements in terms of purity. The proposed process is characterised by zero-waste management and low water consumption, with more than 90% of the water being recycled initially, as well as recycling of the KOH at the end of the process. In addition, it has low energy requirements, since the dissolution of KOH is exothermic. The KCl production of the process is high due to the regeneration of KCl during the chemical transformations, and the process is characterised by its flexibility with respect to different compositions of the starting ore.

The invention relates to a liquid fertilizer containing animal urine and a preparation method thereof, and belongs to the technical field of fertilizers. The preparation method of the liquid fertilizer containing the animal urine comprises the following steps: adding a complex microbial inoculant, humic acid, straw powder, monopotassium phosphate and a compound enzyme into the animal urine, mixing, adjusting the pH value, fermenting, and sieving to obtain a mixed solution; quickly stirring the mixed solution, the modified attapulgite, the phosphate fertilizer, the potash fertilizer, the organic compound, the medium trace elements and the auxiliaries, performing ultrasonic treatment, and emulsifying in an emulsifying machine to obtain the fertilizer. The modified attapulgite prepared by the invention belongs to a mesoporous material, and the liquid fertilizer added with the modified attapulgite has higher viscosity and plays a role in assisting suspending; meanwhile, the modified attapulgite can exist on a liquid-solid interface, the tension of the liquid-solid interface is reduced, and solid particles are wetted by water, so that the tendency of aggregation and sedimentation of the solid particles is reduced; the two effects act together, so that the stability of the liquid fertilizer is improved.

The invention relates to the technical field of agricultural cultivation, in particular to a fertilizing method for fruit tree planting and application of the fertilizing method. The fertilizing method comprises the steps that coated slow-release potash fertilizer is applied to apple trees, the application amount of the coated slow-release potash fertilizer is 0.30-0.90 kg / plant, and the content of potassium oxide in the coated slow-release potash fertilizer is 20%-30%; wherein the coated slow-release potash fertilizer is applied by stages, 50% of the coated slow-release potash fertilizer is applied as a base fertilizer in the flowering and fruit setting periods of the apple trees, and the rest 50% of the coated slow-release potash fertilizer is applied in the fruit expanding period. The utilization rate of the fertilizer can be increased, and the yield and quality of apples can be improved.

The equipment comprises a motor I, a rotating rod, a granulation component and a reaction kettle, the rotating rod used for driving stirring blades to rotate is arranged at the lower end of the motor I, a group of positioning shells used for keeping the rotating rod positioned are arranged on the outer side of the rotating rod, and the granulation component is arranged in the reaction kettle. Compared with the prior art, the tobacco stem biochar chelation reaction device has the following beneficial effects that a worker starts the motor III, and the motor III drives the rotating seat to rotate and drives the pressing roller to rotate in the pressing cavity, so that the tobacco stem biochar chelation reaction device can be used for granulating tobacco stem biochar chelation reactants, and the tobacco stem biochar chelation reaction device can be used for granulating tobacco stem biochar chelation reactants. The particle mixture is extruded in the material pressing cavity and enters the particle pressing holes, so that the particle mixture is pressed into particles, the particles are guided out through the discharging plate, meanwhile, the particle mixture can be uniformly pressed through the particle pressing holes, and it is guaranteed that the sizes of the pressed particles are uniform.

This invention provides a method and system for continuous mining of potash mines based on a rectangular full-face tunneling machine, belonging to the field of mechanized full-face mining technology in underground mines. Firstly, the invention adopts a "loop + three-stage roadway + short-walled room-and-pillar" layout, strictly controlling the exposed area and time of the roof, significantly improving the stability and safety of the mining area. Secondly, through efficient and continuous operation of the entire process of cutting, loading, transfer, and transportation, combining comb-shaped tunneling with unidirectional circulating transportation reduces equipment idle travel, avoids transportation congestion and scheduling conflicts, supports parallel operation of multiple working faces, and completely solves the industry pain point of severe mismatch between mining and transportation efficiency in potash mines. Finally, by precisely matching parameters according to the selection requirements of the rectangular full-face tunneling machine, it has strong adaptability and provides core technical support for the large-scale development of large and extra-large potash mines.

The invention belongs to the technical field of agricultural planting, and relates to a fertilizing method for organically replacing and optimizing the ratio of quick-acting nitrogen to controlled-release nitrogen. The invention provides a fertilizing method for organically replacing and optimizing the ratio of quick-acting nitrogen to controlled-release nitrogen. The fertilizing method comprises the following steps: determining that a nitrogenous fertilizer, a phosphatic fertilizer and a potash fertilizer should be applied to crops; 18-22 w% of the total amount of the nitrogen fertilizer needing to be applied is replaced with an organic fertilizer, the rest is an enforcement nitrogen fertilizer, and the enforcement nitrogen fertilizer is a mixture of common urea and controlled release urea; the organic fertilizer, the nitrogen fertilizer, the phosphate fertilizer and the potash fertilizer are applied at a time before crops are sown. The organic fertilizer is adopted to replace nitrogen fertilizer, so that the cost is reduced, and meanwhile, the yield is not obviously influenced.

The utility model belongs to potassium base three wastes treatment technical field, concretely is a kind of equipment for recovering potassium chloride in potassium base salt mud, flash tank, steam pipe network, condensing tank, filter press, washing pool;The feed end of flash tank is connected with the top of condensing tank by first pipeline and communicates;The output end of flash tank is connected with the input end of steam pipe network by flash steam pipeline, and the output end of the flash steam pipeline is connected with the heating steam pipeline extending to the inside of washing pool;The lower discharge end of condensing tank is connected with the feed end of filter press by second pipeline;Washing pool is connected with the feed end of filter press by salt mud feed pipeline;Pump body is arranged on second pipeline and salt mud feed pipeline;The bottom of filter press is equipped with filter material receiving hopper for receiving filter material, and the discharge end of filter press is equipped with filtrate salt pipe for conveying filtrate to salt making process, and the application has the beneficial effects of efficient recovery of potassium chloride, improved resource utilization rate and the like.