CN105293530A - Crushed and washed salt production method and device - Google Patents
Crushed and washed salt production method and device Download PDFInfo
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- CN105293530A CN105293530A CN201510735838.XA CN201510735838A CN105293530A CN 105293530 A CN105293530 A CN 105293530A CN 201510735838 A CN201510735838 A CN 201510735838A CN 105293530 A CN105293530 A CN 105293530A
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Abstract
The invention relates to a crushed and washed salt production method and a crushed and washed salt production device. A method of twice crushing and three times of washing is adopted, and key devices are selected and combined, so that reliability, stability and economy of a whole production line can be ensured. A dandruff comb for removing large-block salt and impurities is arranged at the upper part of a cabin; an arch breaking device for overcoming the problem that materials cannot be smoothly discharged because of a conventional salt bridge is arranged inside the cabin; a salt combing device and a de-ironing separator are arranged on a belt of a belt conveyer. A double-roller type crusher is adopted to control granularity of salt by adjusting the distance between double rollers of the crusher according to demands on types and granulites of finished products. Due to adoption of a spiral salt washing machine, the crushed and washed salt production device is applicable to salt with relatively large granularity and is good in sand and floating matter washing effect. An adverse current salt washing machine is applicable to crushed granular salt with relatively small granularity, and is high in washing efficiency for relatively fine sand and salt powder.
Description
Technical field
The present invention relates to a kind of powder desalinization of soil by flooding or leaching production method and device, belong to inorganic chemical technology technical field.
Background technology
The production method of the powder desalinization of soil by flooding or leaching take crude salt as raw material, processes through operations such as pulverizing, washing, dehydration, drying, screenings.If crude salt is without washing etc., no matter the finished product salt produced is that outward appearance or physical and chemical index such as the indexs such as sodium-chlor, moisture, soluble impurity, iodine content (homogeneity), whiteness all do not meet national Standard for Food Grade Salt.This brings certain impact to the market sale of product salt.And crude salt added value is low, how improved the quality of crude salt by some apparatus and method process, improve the economic benefit of enterprise, seem particularly necessary.The powder desalinization of soil by flooding or leaching is processed through pulverizing the operations such as washing by crude salt.Technical process that original technology adopts mainly once to pulverize, once washing, namely crude salt is once pulverized by pulverizer, after carry out once washing by desalinization of soil by flooding or leaching equipment after obtain the powder desalinization of soil by flooding or leaching.Or once pulverize, (namely crude salt is once pulverized by pulverizer in twice washing, after carry out twice washing by desalinization of soil by flooding or leaching equipment after obtain the powder desalinization of soil by flooding or leaching) etc. be main, and the combination of the device that it adopts in the whole production line of powder desalinization of soil by flooding or leaching coupling is different, if any employing reaction pulverizer pulverize, cause the size-grade distribution of product salt uneven, the more difficult control of size-grade distribution.The washing screw that only adopts had carries out once washing, or adopts washing screw and stirring desalinization of soil by flooding or leaching machine to carry out twice washing respectively, and cause the quality of product salt also variant, the content as sodium-chlor is lower, does not reach state quality standard.Powder desalinization of soil by flooding or leaching production method of the present invention and device pass through optimization technological process, and mate the device of a set of dependable performance and obtain varigrained product salt, comprise purified salt product and granulated salt product, and guarantee powder desalinization of soil by flooding or leaching quality product, the different demands in market can be adapted to.The product color obtained is pure white, and granular size is suitable for, wherein purified salt product, sodium chloride content >=98.5%, whiteness >=75, granularity 0.15-0.85mm >=80%.Granulated salt product, granularity 0.5-2.5mm >=80%, whiteness >=55.Best in quality, can be used for eating, food-processing industry or livestock industry salt etc.It has that production technique is simple, less investment, construction period are short, power consumption less, low cost and other advantages.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention proposes a kind of powder desalinization of soil by flooding or leaching production method and device; Adopt the method for twice pulverizing, three washings, optimize material trend, and to some relevant devices as crude salt feed bin, crude salt iron removing belt, pulverizer, vibration water sieve, selecting of drying bed, whizzer etc. is suitable for more economically, and dependable performance is stablized.
The object of the invention is to obtain a kind of production method and the device that adapt to the powder desalinization of soil by flooding or leaching of the different demand in market.This technical costs is cheap, and added value is high, the purified salt product obtained and granulated salt product look clean in vain, wherein purified salt product, sodium chloride content >=98.5%, whiteness >=75, granularity 0.15-0.85mm >=80%.Granulated salt product, granularity 0.5-2.5mm >=80%, whiteness >=55.Quality is high, meets different customers, is widely used.
The present invention is realized by following concrete technical scheme:
A kind of powder desalinization of soil by flooding or leaching production method, as shown in Figure 1, comprises the steps:
(1) crude salt adds crude salt feed bin by shovel loader, then sends through the constant feeder of bin bottom;
(2) crude salt from constant feeder is first carried through charging belt machine through picking up measuring belt transfer roller again, and carries out deironing process to crude salt on rotary conveyor, and the crude salt processed enters Roughpulverizer and carries out one-level pulverizing;
(3) salt after meal enters the saturated bittern that spiral desalinization of soil by flooding or leaching machine adds the clarification obtained through brine treatment operation and carries out one-level washing;
(4) salt after washing, after the screening of vibration water sieve, enters smart pulverizer and carries out two grade pulverization, and after pulverizing, salt falls into the saturated bittern that steel basin adds clarification and carries out agitator treating; Salt slurry after washing is pumped to adverse current desalinization of soil by flooding or leaching device and carries out rinsing, and the bottom salt slurry of adverse current desalinization of soil by flooding or leaching device enters material loading steel basin and carries out agitator treating;
(5) enter centrifuge dewatering after the salt slurry after washing is pumped to thickener thickening, then send into drying bed by worm conveyor and carry out drying; The salt powder major part that drying bed tail gas is carried secretly reclaims through cyclonic separator, and final tail gas discharges after wet scrubber dedusting.
(6) enter a turn sieve screening after drying, screen underflow is refined salt, and screen overflow sends into probability screen through chapelet.Separate various grain particles salt from probability screen, granulated salt can obtain purer granulated salt product after the choosing of color selector look;
(7) refined salt obtained after screening enters packaging system through being packaged to be purified salt product through adding after iodine machine adds iodine.
In above-mentioned steps (1), feed bin top adds double-edged fine-toothed comb, the salt of removing bulk and some impurity, arranges arch breaking apparatus and cause the smooth problem of blanking to eliminate crude salt bridge formation in feed bin.
For the ease of deironing with pick up operation, the wide 100mm-1000mm of belt of belt conveyor in above-mentioned steps (2), comb salt device and tramp iron separator will be set above.
Comb salt device, for can adopt rake etc., carries out combing to the salt of conveying passing on belt, spreads out.
Tramp iron separator adopts magnet, can adsorb the iron filings in crude salt.
In above-mentioned steps (2) (4), Roughpulverizer and slimer adopt pair roller type pulverizer; And according to finished product kind granularity needs, the granularity of salt can be controlled by adjustment pulverizer pair roller spacing.
Control bittern volume ratio in spiral desalinization of soil by flooding or leaching machine in above-mentioned steps (3) and be about 1:0.5-1:10, the degree Beaume of saturated bittern controls at 24 degree ~ 25 degree.
The middle brine treatment operation of above-mentioned steps (3) is that the bittern after washing is more containing quantity of sand and mud, and pump into pressure filter through time halogen groove and brine pump, can be press-filtered out salt slag and mud, pressure filter mother liquor enters bittern settling pond and clarifies.Bittern water pump after clarification pumps into pulverizing washing procedure and recycles.
In above-mentioned steps (4) after the screening of vibration water sieve, the comparatively small Particle salt under sieve directly enters stirring desalinization of soil by flooding or leaching groove and carries out agitator treating, and the larger particles salt on sieve enters after smart pulverizer carries out two grade pulverization and falls into steel basin; Control bittern volume ratio in steel basin and be about 1:0.5-1:10; Control bittern volume ratio in adverse current desalinization of soil by flooding or leaching device and be about 1:0.5-1:10;
In above-mentioned steps (5), whizzer adopts P-80, P-40, and the whizzer 630 etc. of P50, P-60 or in addition other type, separation efficiency is high, and material moisture is less than 3%.Drying bed adopts fixed drying bed, dependable performance.
Add iodine machine in above-mentioned steps (7) and adopt adjustable supplementation of iodine salt machine, add iodine precision high, stable performance.Packing shop arranges dust-removal system, favourable to the steady running of wrapping machine.
A kind of powder desalinization of soil by flooding or leaching production equipment, it is characterized in that being carried by crude salt material loading, pulverize washing, dry sieve color separation is selected, and adds iodine packaging process device and connects to form successively.Crude salt adds the top of crude salt feed bin (2) by shovel loader (1), crude salt feed bin (2) outlet at bottom is connected with constant feeder (3), constant feeder (3) exports and picks up measuring belt transfer roller (4) and be connected, pick up measuring belt transfer roller (4) to be connected with charging belt machine (5), charging belt machine (5) is connected with Roughpulverizer (6) import, Roughpulverizer (6) outlet is connected with spiral desalinization of soil by flooding or leaching machine (8) afterbody through bucket elevator (7), spiral desalinization of soil by flooding or leaching machine (8) is connected with vibration water sieve (9), vibration water sieve (9) upper part discharge port is connected with slimer (10), vibration water sieve (9) bottom discharge port is connected with steel basin (11), the bottom discharge mouth of slimer (10) is connected with steel basin (11), the outlet of the brine pump (12) that steel basin (11) is other is connected with the import of adverse current desalinization of soil by flooding or leaching machine (13), the outlet at bottom of adverse current desalinization of soil by flooding or leaching machine (13) is connected with material loading steel basin (14), material loading steel basin (14) is connected with thickener (16) import through pump (15), the outlet at bottom of thickener (16) is connected with the import of whizzer (17), the outlet of whizzer (17) is connected through the material import of U-shaped spiral (18) with drying bed (19), the material outlet of drying bed (19) through bucket elevator (20) with turn sieve (21) import and be connected, turn sieve (21) outlet at bottom and add iodine device (22) import and be connected, add iodine device (22) outlet to be connected with packaging machine system device (24) through bucket elevator (23), turn sieve (21) upper outlet to be connected with probability screen (26) through bucket elevator (25), one of them outlet of probability screen (26) with add iodine device (22) and be connected, outlet is in addition connected with color selector (27).As shown in Figure 2.
The present invention, by powder desalinization of soil by flooding or leaching production process, combines the selection of some key devices, has ensured the reliability of whole production line, stability, economy.Feed bin top adds double-edged fine-toothed comb, the salt of removing bulk and some impurity, and arrange arch breaking apparatus in feed bin and cause the smooth problem of blanking to eliminate crude salt bridge formation, crude salt is evenly sent by the constant feeder of bin bottom.The wide about 100-1000mm of belt of belt conveyor, will arrange comb salt device and tramp iron separator above.Pair roller type pulverizer selected by pulverizer, according to finished product kind granularity needs, and can by the granularity regulating pulverizer pair roller spacing to control salt.Adopt spiral desalinization of soil by flooding or leaching machine, be applicable to the salt that granularity is larger, washing silt and floating matter effective.Adverse current desalinization of soil by flooding or leaching machine is suitable for the less granulated salt of granularity after pulverizing, to thinner silt and salt powder detersive efficiency high.Whizzer adopts P-80, P-40, P50, P-60 or also has the whizzer 630 etc. of other type, and after being separated, material is moisture is less than 3%.Drying bed adopts fixed drying bed, dependable performance, long service life, and steam consumption quantity is few, environmental protection and energy saving, and configures environment friendly dedusting device.Adopt and turn sieve, screening efficiency is high, and service life of equipment is long.Adopt probability screen, the product salt of multiple different-grain diameter size can be sieved out.Add iodine machine and adopt adjustable supplementation of iodine salt machine, add iodine precision high, stable performance.
Accompanying drawing explanation
Fig. 1: the technological process of production of the powder desalinization of soil by flooding or leaching.
Fig. 2: the production equipment figure of the powder desalinization of soil by flooding or leaching
In figure: 1, shovel loader; 2, crude salt feed bin; 3, constant feeder; 4, measuring belt transfer roller is picked up; 5, charging belt machine; 6, Roughpulverizer; 7, bucket elevator; 8, spiral desalinization of soil by flooding or leaching machine; 9, water sieve is vibrated; 10, slimer; 11, steel basin; 12, brine pump; 13, adverse current desalinization of soil by flooding or leaching machine; 14, material loading steel basin; 15, brine pump; 16, thickener; 17, whizzer; 18, U-shaped spiral; 19, drying bed; 20, bucket elevator; 21, sieve is turned; 22, iodine device is added; 23, bucket elevator; 24, packaging machine system device; 25, bucket elevator; 26, probability screen; 27, color selector.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in the figure: carried by crude salt material loading, pulverize washing, dry sieve color separation is selected, and adds iodine packaging process device and connects to form successively.Crude salt adds the top of crude salt feed bin (2) by shovel loader (1), crude salt feed bin (2) outlet at bottom is connected with constant feeder (3), constant feeder (3) exports and picks up measuring belt transfer roller (4) and be connected, pick up measuring belt transfer roller (4) to be connected with charging belt machine (5), charging belt machine (5) is connected with Roughpulverizer (6) import, Roughpulverizer (6) outlet is connected with spiral desalinization of soil by flooding or leaching machine (8) afterbody through bucket elevator (7), spiral desalinization of soil by flooding or leaching machine (8) is connected with vibration water sieve (9), vibration water sieve (9) upper part discharge port is connected with slimer (10), vibration water sieve (9) bottom discharge port is connected with steel basin (11), the bottom discharge mouth of slimer (10) is connected with steel basin (11), the outlet of the brine pump (12) that steel basin (11) is other is connected with the import of adverse current desalinization of soil by flooding or leaching machine (13), the outlet at bottom of adverse current desalinization of soil by flooding or leaching machine (13) is connected with material loading steel basin (14), material loading steel basin (14) is connected with thickener (16) import through pump (15), the outlet at bottom of thickener (16) is connected with the import of whizzer (17), the outlet of whizzer (17) is connected through the material import of U-shaped spiral (18) with drying bed (19), the material outlet of drying bed (19) through bucket elevator (20) with turn sieve (21) import and be connected, turn sieve (21) outlet at bottom and add iodine device (22) import and be connected, add iodine device (22) outlet to be connected with packaging machine system device (24) through bucket elevator (23), turn sieve (21) upper outlet to be connected with probability screen (26) through bucket elevator (25), one of them outlet of probability screen (26) with add iodine device (22) and be connected, outlet is in addition connected with color selector (27).
Purchase external or domestic high-quality crude salt, the top of crude salt feed bin (2) is added by shovel loader (1), feed bin top is by adding double-edged fine-toothed comb, and the salt of removing bulk and some impurity, arrange arch breaking apparatus and cause the smooth problem of blanking to eliminate crude salt bridge formation in feed bin.Crude salt is evenly sent through the constant feeder of bin bottom (3) again.Belt of belt conveyor being provided with rake etc. is comb salt device, carries out combing, spread out the salt of conveying passing on belt; There is magnet simultaneously, can the iron filings in crude salt be adsorbed.Pick up after measuring belt transfer roller (4) carries out removal of impurities and metering to crude salt and be delivered to pair roller type Roughpulverizer (6) by charging belt machine (5), again through bucket elevator (7) and the afterbody being delivered to spiral desalinization of soil by flooding or leaching machine (8), laggardly enter to vibrate water sieve (9) through spiral washing, vibration water sieve (9) screen overflow enters pair roller type slimer (10) by discharge port, vibration water sieve (9) screen underflow enters steel basin (11) through discharge port, salt simultaneously after the pulverizing of pair roller type slimer (10) also enters steel basin (11) and pump into adverse current desalinization of soil by flooding or leaching machine (13) by brine pump (12) after agitator treating, after countercurrent washing, salt slurry enters steel basin (14) from the outlet at bottom of adverse current desalinization of soil by flooding or leaching machine (13) and after stirring, pumps into thickener (16) through pump (15) again, after thickener thickening, salt slurry to enter whizzer (17) dehydration of salt is less than 3% to moisture from the bottom of thickener (16).Fixed drying bed (19) is entered again through U-shaped spiral (18), be transported to through bucket elevator (20) after drying and turn sieve (21), after turning sieve (21) screening, screen underflow enters adjustable salt iodization device (22) through bottom discharge mouth to carry out adding iodine, then through bucket elevator (23) be delivered to packaging machine system device (24) packaging after obtain purified salt product.After turning sieve (21) screening, screen overflow is delivered to probability screen (26) through bucket elevator (25), can sieve out the product salt of multiple different-grain diameter size.The screen underflow of probability screen (26) can enter adjustable salt iodization device (22) through outlet at bottom and go to produce purified salt product.And the screen overflow of probability screen (26) through outlet can enter color selector (27) through look choosing after obtain granulated salt product.
Embodiment 1
Purchase external or domestic high-quality crude salt, mainly with sea, lake salt is for raw material, shovel loader is used to add crude salt feed bin, feed bin top adds double-edged fine-toothed comb, the salt of removing bulk and some impurity, arch breaking apparatus is set in feed bin and causes the smooth problem of blanking to eliminate crude salt bridge formation, then send through the constant feeder of bin bottom.From the crude salt of constant feeder first through picking up measuring belt transfer roller again through the conveying of charging belt machine, and on rotary conveyor, deironing process is carried out to crude salt, deironing be by conveyor above tramp iron separator, the magnetic foreign material such as the iron and steel in sucking-off crude salt.For the ease of deironing with pick up operation, the wide 100mm of belt of rotary conveyor, scanning frequency wants slow, can pick up the impurity in salt with person who happens to be on hand for an errand, will arrange comb salt device above.The crude salt processed enters pair roller type Roughpulverizer and carries out one-level pulverizing, and according to finished product kind granularity needs, can be controlled the granularity of salt by adjustment pulverizer pair roller spacing.Salt after meal enters the saturated bittern that spiral desalinization of soil by flooding or leaching machine adds the clarification obtained through brine treatment operation and carries out one-level washing, and control bittern volume ratio and be about 1:0.5, saturated bittern is from brine treatment operation, and degree Beaume is 24 degree.Salt after washing is after the screening of vibration water sieve, and the comparatively small Particle salt under sieve directly enters stirring desalinization of soil by flooding or leaching groove and carries out agitator treating; Larger particles salt on sieve enters after smart pulverizer carries out two grade pulverization, falls into the saturated bittern that steel basin adds clarification and carries out agitator treating, control bittern volume ratio and be about 1:0.5.Salt slurry after washing is pumped to adverse current desalinization of soil by flooding or leaching device and carries out rinsing, controls bittern volume ratio and is about 1:0.5, and the bottom salt slurry of adverse current desalinization of soil by flooding or leaching device enters steel basin and carries out agitator treating, can add appropriate saturated halogen, regulate bittern volume ratio to be about 1:0.5.P-80 centrifuge dewatering is entered after salt slurry after washing is pumped to thickener thickening.Then send into fixed drying bed by worm conveyor and carry out drying, the salt powder major part that drying bed tail gas is carried secretly reclaims through cyclonic separator, and final tail gas discharges after wet scrubber dedusting.Enter after drying and turn sieve screening, screen underflow is refined salt, and screen overflow sends into probability screen through chapelet.Separate various grain particles salt from probability screen, granulated salt can obtain purer granulated salt product after the choosing of color selector look.Its whiteness be 56, granularity 0.5-2.5mm be 82%.The refined salt obtained after screening enters packaging system through being packaged to be purified salt product after adjustable supplementation of iodine salt machine adds iodine.Its sodium chloride content is 98.7%, and whiteness is 76, granularity 0.15-0.85mm is 83%.Packing shop arranges dust-removal system, favourable to the steady running of wrapping machine.In washing, saturated bittern used is the clarification bittern after the process of brine treatment operation.Brine treatment operation is that the bittern after washing is more containing quantity of sand and mud, and pump into pressure filter through time halogen groove and brine pump, can be press-filtered out salt slag and mud, pressure filter mother liquor enters bittern settling pond and clarifies.Bittern water pump after clarification pumps into pulverizing washing procedure and recycles.
Embodiment 2
Purchase external or domestic high-quality crude salt, mainly with sea, lake salt is for raw material, shovel loader is used to add crude salt feed bin, feed bin top adds double-edged fine-toothed comb, the salt of removing bulk and some impurity, arch breaking apparatus is set in feed bin and causes the smooth problem of blanking to eliminate crude salt bridge formation, then send through the constant feeder of bin bottom.From the crude salt of constant feeder first through picking up measuring belt transfer roller again through the conveying of charging belt machine, and on rotary conveyor, deironing process is carried out to crude salt, deironing be by conveyor above tramp iron separator, the magnetic foreign material such as the iron and steel in sucking-off crude salt.For the ease of deironing with pick up operation, the wide 1000mm of belt of belt conveyor, scanning frequency wants slow, can pick up the impurity in salt with person who happens to be on hand for an errand, will arrange comb salt device above.The crude salt processed enters pair roller type Roughpulverizer and carries out one-level pulverizing, and according to finished product kind granularity needs, can be controlled the granularity of salt by adjustment pulverizer pair roller spacing.Salt after meal enters the saturated bittern that spiral desalinization of soil by flooding or leaching machine adds the clarification obtained through brine treatment operation and carries out one-level washing, and control bittern volume ratio and be about 1:10, saturated bittern is from brine treatment operation, and degree Beaume is 25 degree.Salt after washing is after the screening of vibration water sieve, and the comparatively small Particle salt under sieve directly enters stirring desalinization of soil by flooding or leaching groove and carries out agitator treating; Larger particles salt on sieve enters after smart pulverizer carries out two grade pulverization, falls into the saturated bittern that steel basin adds clarification and carries out agitator treating, control bittern volume ratio and be about 1:10.Salt slurry after washing is pumped to adverse current desalinization of soil by flooding or leaching device and carries out rinsing, controls bittern volume ratio and is about 1:10, and the bottom salt slurry of adverse current desalinization of soil by flooding or leaching device enters steel basin and carries out agitator treating, can add appropriate saturated halogen, regulate bittern volume ratio to be about 1:10.P-60 centrifuge dewatering is entered after salt slurry after washing is pumped to thickener thickening.Then send into fixed drying bed by worm conveyor and carry out drying, the salt powder major part that drying bed tail gas is carried secretly reclaims through cyclonic separator, and final tail gas discharges after wet scrubber dedusting.Enter after drying and turn sieve screening, screen underflow is refined salt, and screen overflow sends into probability screen through chapelet.Separate various grain particles salt from probability screen, granulated salt can obtain purer granulated salt product after the choosing of color selector look.Its whiteness be 60, granularity 0.5-2.5mm be 85%.The refined salt obtained after screening enters packaging system through being packaged to be purified salt product after adjustable supplementation of iodine salt machine adds iodine.Its sodium chloride content is 99.0%, and whiteness is 77, granularity 0.15-0.85mm is 85%.Packing shop arranges dust-removal system, favourable to the steady running of wrapping machine.In washing, saturated bittern used is the clarification bittern after the process of brine treatment operation.Brine treatment operation is that the bittern after washing is more containing quantity of sand and mud, and pump into pressure filter through time halogen groove and brine pump, can be press-filtered out salt slag and mud, pressure filter mother liquor enters bittern settling pond and clarifies.Bittern water pump after clarification pumps into pulverizing washing procedure and recycles.
Embodiment 3
Purchase external or domestic high-quality crude salt, mainly with sea, lake salt is for raw material, shovel loader is used to add crude salt feed bin, feed bin top adds double-edged fine-toothed comb, the salt of removing bulk and some impurity, arch breaking apparatus is set in feed bin and causes the smooth problem of blanking to eliminate crude salt bridge formation, then send through the constant feeder of bin bottom.From the crude salt of constant feeder first through picking up measuring belt transfer roller again through the conveying of charging belt machine, and on rotary conveyor, deironing process is carried out to crude salt, deironing be by conveyor above tramp iron separator, the magnetic foreign material such as the iron and steel in sucking-off crude salt.For the ease of deironing with pick up operation, the wide 700mm of belt of belt conveyor, scanning frequency wants slow, can pick up the impurity in salt with person who happens to be on hand for an errand, will arrange comb salt device above.The crude salt processed enters pair roller type Roughpulverizer and carries out one-level pulverizing, and according to finished product kind granularity needs, can be controlled the granularity of salt by adjustment pulverizer pair roller spacing.Salt after meal enters the saturated bittern that spiral desalinization of soil by flooding or leaching machine adds the clarification obtained through brine treatment operation and carries out one-level washing, and control bittern volume ratio and be about 1:6, saturated bittern is from brine treatment operation, and degree Beaume is 24.5 degree.Salt after washing is after the screening of vibration water sieve, and the comparatively small Particle salt under sieve directly enters stirring desalinization of soil by flooding or leaching groove and carries out agitator treating; Larger particles salt on sieve enters after smart pulverizer carries out two grade pulverization, falls into the saturated bittern that steel basin adds clarification and carries out agitator treating, control bittern volume ratio and be about 1:6.Salt slurry after washing is pumped to adverse current desalinization of soil by flooding or leaching device and carries out rinsing, controls bittern volume ratio and is about 1:6, and the bottom salt slurry of adverse current desalinization of soil by flooding or leaching device enters steel basin and carries out agitator treating, can add appropriate saturated halogen, regulate bittern volume ratio to be about 1:6.P-50 centrifuge dewatering is entered after salt slurry after washing is pumped to thickener thickening.Then send into fixed drying bed by worm conveyor and carry out drying, the salt powder major part that drying bed tail gas is carried secretly reclaims through cyclonic separator, and final tail gas discharges after wet scrubber dedusting.Enter after drying and turn sieve screening, screen underflow is refined salt, and screen overflow sends into probability screen through chapelet.Separate various grain particles salt from probability screen, granulated salt can obtain purer granulated salt product after the choosing of color selector look.Its whiteness be 55, granularity 0.5-2.5mm be 80%.The refined salt obtained after screening enters packaging system through being packaged to be purified salt product after adjustable supplementation of iodine salt machine adds iodine.Its sodium chloride content is 98.5%, and whiteness is 75, granularity 0.15-0.85mm is 80%.Packing shop arranges dust-removal system, favourable to the steady running of wrapping machine.In washing, saturated bittern used is the clarification bittern after the process of brine treatment operation.Brine treatment operation is that the bittern after washing is more containing quantity of sand and mud, and pump into pressure filter through time halogen groove and brine pump, can be press-filtered out salt slag and mud, pressure filter mother liquor enters bittern settling pond and clarifies.Bittern water pump after clarification pumps into pulverizing washing procedure and recycles.
Claims (6)
1. a powder desalinization of soil by flooding or leaching production method, is characterized in that step is as follows:
(1) crude salt adds crude salt feed bin by shovel loader, then sends through the constant feeder of bin bottom;
(2) crude salt from constant feeder is first carried through charging belt machine through picking up measuring belt transfer roller again, and carries out deironing process to crude salt on rotary conveyor, and the crude salt processed enters Roughpulverizer and carries out one-level pulverizing;
(3) salt after meal enters the saturated bittern that spiral desalinization of soil by flooding or leaching machine adds the clarification obtained through brine treatment operation and carries out one-level washing;
(4) salt after washing, after the screening of vibration water sieve, enters smart pulverizer and carries out two grade pulverization, and after pulverizing, salt falls into the saturated bittern that steel basin adds clarification and carries out agitator treating; Salt slurry after washing is pumped to adverse current desalinization of soil by flooding or leaching device and carries out rinsing, and the bottom salt slurry of adverse current desalinization of soil by flooding or leaching device enters material loading steel basin and carries out agitator treating;
(5) enter centrifuge dewatering after the salt slurry after washing is pumped to thickener thickening, then send into drying bed by worm conveyor and carry out drying; The salt powder major part that drying bed tail gas is carried secretly reclaims through cyclonic separator, and final tail gas discharges after wet scrubber dedusting.
(6) enter a turn sieve screening after drying, screen underflow is refined salt, and screen overflow sends into probability screen through chapelet.Separate various grain particles salt from probability screen, granulated salt can obtain purer granulated salt product after the choosing of color selector look;
(7) refined salt obtained after screening enters packaging system through being packaged to be purified salt product through adding after iodine machine adds iodine.
2. the method for claim 1, it is characterized in that controlling bittern volume ratio in spiral desalinization of soil by flooding or leaching machine in step (3) is about 1:0.5-1:10, the degree Beaume of saturated bittern controls at 24 degree ~ 25 degree.
3. the method for claim 1, it is characterized in that in step (4) through vibration water sieve screening after, comparatively small Particle salt under sieve directly enters stirring desalinization of soil by flooding or leaching groove and carries out agitator treating, and the larger particles salt on sieve enters after smart pulverizer carries out two grade pulverization and falls into steel basin; Control bittern volume ratio in steel basin and be about 1:0.5-1:10; Control bittern volume ratio in adverse current desalinization of soil by flooding or leaching device and be about 1:0.5-1:10.
4. a powder desalinization of soil by flooding or leaching production equipment, is characterized in that being carried by crude salt material loading, pulverizes washing, and dry sieve color separation is selected, and adds iodine packaging process device and connects to form successively, crude salt adds the top of crude salt feed bin (2) by shovel loader (1), crude salt feed bin (2) outlet at bottom is connected with constant feeder (3), constant feeder (3) exports and picks up measuring belt transfer roller (4) and be connected, pick up measuring belt transfer roller (4) to be connected with charging belt machine (5), charging belt machine (5) is connected with Roughpulverizer (6) import, Roughpulverizer (6) outlet is connected with spiral desalinization of soil by flooding or leaching machine (8) afterbody through bucket elevator (7), spiral desalinization of soil by flooding or leaching machine (8) is connected with vibration water sieve (9), vibration water sieve (9) upper part discharge port is connected with slimer (10), vibration water sieve (9) bottom discharge port is connected with steel basin (11), the bottom discharge mouth of slimer (10) is connected with steel basin (11), the outlet of the brine pump (12) that steel basin (11) is other is connected with the import of adverse current desalinization of soil by flooding or leaching machine (13), the outlet at bottom of adverse current desalinization of soil by flooding or leaching machine (13) is connected with material loading steel basin (14), material loading steel basin (14) is connected with thickener (16) import through pump (15), the outlet at bottom of thickener (16) is connected with the import of whizzer (17), the outlet of whizzer (17) is connected through the material import of U-shaped spiral (18) with drying bed (19), the material outlet of drying bed (19) through bucket elevator (20) with turn sieve (21) import and be connected, turn sieve (21) outlet at bottom and add iodine device (22) import and be connected, add iodine device (22) outlet to be connected with packaging machine system device (24) through bucket elevator (23), turn sieve (21) upper outlet to be connected with probability screen (26) through bucket elevator (25), one of them outlet of probability screen (26) with add iodine device (22) and be connected, outlet is in addition connected with color selector (27).
5. device as claimed in claim 4, is characterized in that feed bin top adds double-edged fine-toothed comb, arranges arch breaking apparatus in feed bin.
6. device as claimed in claim 4, is characterized in that the wide 100mm-1000mm of belt of belt conveyor, will arrange comb salt device and tramp iron separator above.
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