CN114259505B - Calcined and quenched water fly processing method for calamine - Google Patents
Calcined and quenched water fly processing method for calamine Download PDFInfo
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Abstract
The invention relates to the field of mineral medicine processing and production technology, in particular to a calcined and quenched water fly processing method of calamine. The calamine powder processing technology comprises the following steps: crushing calamine into fragments with the diameter of 7-26 mm, calcining at 700 ℃ for 20 min, quenching with 2 times of water, and operating for 2 times. Combining the two calcined and quenched solids, grinding the calcined and quenched solids while the calcined and quenched solids are hot, grinding the calcined and quenched solids for 10 times at a grinding speed of 60 times/min for 4-6 min, wherein the water consumption of each water flight is 30-35 times of the water consumption of the 1 st time according to the multiple of the raw material feeding amount, the water consumption of the 2 nd time is 20-25 times of the water consumption of the 3 rd-4 th time is 15-20 times of the water consumption of the 3 rd-4 th time, the water consumption of the 5-6 th time is 10-15 times of the water consumption of the 7-10 th time, and the water consumption of the 7-10 th time is 5-10 times of the water consumption of the 7-10 th time. Mixing the water-borne suspensions, standing for 12-18 h, discarding the supernatant, and centrifuging for 10-20 min at 2500 rpm, and drying the residues at 80-105 ℃ for 4-6 h to constant weight. The obtained product has high yield and high zinc oxide content, and accords with the superfine powder specification.
Description
Technical Field
The invention relates to the field of mineral medicine processing and production technology, in particular to a calcined and quenched water fly processing method of calamine.
Background
Calamine, also known as sheep liver stone, pumice, furnace eye stone, etc., is carbonate mineral calcite type siderite, mainly containing zinc carbonate (ZnCO) 3 ) The currently marketed raw calamine is mostly hydrozincite, mainly containing basic zinc carbonate (Zn) 5 (CO 3 ) 2 (OH) 6 ). The calamine is sweet in taste and flat in nature, and is carried in the part of the 2020 edition of Chinese pharmacopoeia; enter liver and spleen meridians; has effects of removing toxic substances, improving eyesight, removing nebula, eliminating dampness, relieving itching and healing sore, and can be used for treating conjunctival congestion, nebula membrane, pterygium, ulcer, running water dripping, and wet sore pruritus. Clinically, the calamine is externally used after calcination, zinc carbonate (or basic zinc carbonate) is converted into zinc oxide in the calcination process, and the zinc oxide has astringency and sterilization capability, and is clinically usedIt is commonly used for treating skin diseases such as skin itch, eczema, abscess, wound, etc.
The prior patent CN102309519A discloses a method for preparing calcined calamine by quenching water, which comprises calcining calamine at 600-800 ℃ for 3h, crushing, sieving with a 100-mesh sieve, adding 5-10 times of water, grinding to obtain calamine water slurry, settling for 5-10 min, sieving with 120-mesh water slurry, standing, dehydrating, and superfine grinding to obtain the product. Firstly, the calcining process of the process is calcining for 3 hours at the temperature of more than 600 ℃, and according to the thermal gravimetric analysis result of calamine, the pyrolysis sensitive temperature zone of the main components of zinc carbonate and basic zinc carbonate is 200-360 ℃ and the peak value is 281.6 ℃, so that calcining can be completed in a short time when calcining at the temperature of more than 600 ℃, and the conversion of zinc carbonate or basic zinc carbonate into zinc oxide can be realized, and therefore, the process can cause waste of energy cost; secondly, crushing calcined calamine, carrying out water flight on calamine powder which can pass through a 100-mesh sieve, and then passing through a 120-mesh sieve on the water flight suspension to obtain a water flight product, wherein the calamine which cannot be sieved is discarded after two sieving operations, so that loss is caused, and the yield is limited; and in the process, superfine grinding is needed to be carried out on the obtained water-borne product, superfine grinding equipment is needed, and the equipment cost is increased.
The applicant subject group carries out intensive research on the calamine calcining water-fly process in the early stage, and discovers that when the calcining temperature reaches 700 ℃, the calamine calcining water-fly process can be in a 'red-through' state described in ancient books and pharmacopoeias, and XRD detection results show that zinc carbonate or basic zinc carbonate in a raw product can be converted into zinc oxide after 0.5h at the calcining temperature; compared with the calcining effect at low temperature for a long time, the calcining temperature is preferably 700 ℃, the ingredient conversion degree is slightly lower, the increasing temperature has no greater benefit on ingredient conversion, and the energy cost is increased. The calamine is an ore, the calamine exists in a lump shape, the calamine is properly crushed before calcining, the crushing degree is inspected, the result shows that the zinc oxide increment after calcining the calamine with the particle size of 7-9 mm to 39-41 mm can reach more than 40%, the smaller the particle size is, the larger the stacking density is, the contact between the material and air is influenced, the conversion of components is adversely affected, and the calamine calcining process is optimized through orthogonal experiments, wherein the calamine is crushed into small blocks with the particle size of 7-9 mm, and the calamine is calcined for 1h at 700 ℃. This part of the experimental content has published scientific papers, which significantly shortens the calcination time and reduces the time cost and energy cost compared with the calcination method disclosed in the invention patent CN102309519 a.
In view of the fact that calamine is clinically used as an external medicine, the smaller the particle size of the material, the more favorable the percutaneous absorption is, and the curative effect is guaranteed, the preparation of superfine powder after calcining the calamine is an important step. The common method for preparing superfine powder from mineral medicines is water-borne, and the crude medicines and water are repeatedly ground to prepare the superfine greasy powder by utilizing the fact that the crude medicines and the fine powders have different suspension properties in water. Compared with superfine grinding of the product disclosed in the invention patent CN102309519A, the water-fly method does not need superfine grinding equipment, and the cost is obviously reduced. The applicant has studied the water-fly process after calcining the calamine in the early stage, and the obtained process has certain defects, such as time required for cooling after calcining, crushing operation required before water-fly, large water consumption for water-fly, and the like. In the mineral drug calcining process, the drug is immediately put into a specified liquid auxiliary material for rapid cooling after being calcined until the drug is red, and the method is repeated for a plurality of times until the drug is crisp, which is called a quenching method. At present, less research is carried out on calcined quenching of the calamine, and the calcining quenching process of the calamine is researched to a certain extent by using the materials of Dou et al, sho et al, zhou Lingjun, and the like, but the differences of the process parameters obtained by calcining time and calcining quenching times are large, and the process parameters of water flight are not related.
In view of the problems existing in the prior art, the method for preparing the calcined calamine quenched water fly processing method by taking the problems as guidance is obtained, and the method is simple in operation process, low in production cost, high in product yield, small in particle size and high in zinc oxide content.
Disclosure of Invention
The invention aims to provide a calcined and quenched water fly processing method for calamine. The invention optimizes the water consumption of the water fly by taking the zinc oxide increment and the product yield as indexes, and optimizes the calcined and quenched process parameters of the calamine by adopting an orthogonal design method, thereby finally obtaining the optimal calcined and quenched water fly process of the calamine.
In order to achieve the above object, the present invention provides the following technical solutions.
The invention provides a calcined and quenched water fly processing method for calamine, which specifically comprises the following steps:
step one: crushing calamine into small blocks, putting the small blocks into a calciner for calcining until the calamine is red, immediately putting the small blocks into water, stirring the small blocks while the small blocks are hot, pouring out water solution, and calcining residues until the small blocks are red; standing the water solution to settle, discarding supernatant, and collecting residue;
step two: adding the re-reddish calamine into water, grinding while hot, adding water into calamine paste, stirring, settling coarse powder, and pouring out suspension; adding water into the residue, repeatedly grinding and flying, and mixing the poured suspension;
step three: standing the combined suspension, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
step four: the resulting precipitate was dried to constant weight.
Further, the crushed particle size of the calamine in the first step is 7-26 mm, and the preferable particle size is 7-9 mm; the calcining temperature is 700 ℃, the calcining time is 20-40 min, and the calcining time is preferably 20 min; the calcining and quenching water consumption is 2-4 times of the feeding amount of the product, and the water consumption is preferably 2 times; and (3) settling the water solution poured out in the first step, discarding the water solution, and allowing residues and the calamine quenched in the second step to fly together.
Further, in the second step, the grinding speed is 60 times/min in each water flight operation, and the grinding time is 4-6 min; the water flight times are 10 times, and the water consumption is calculated according to the feeding quantity multiple of the raw product, wherein the water consumption at the 1 st time is 30-40 times, the water consumption at the 2 nd time is 20-30 times, the water consumption at the 3 rd-4 th time is 15-20 times, the water consumption at the 5 th-6 th time is 10-15 times, and the water consumption at the 7 th-10 th time is 5-10 times; the settling time of the coarse powder is 10-30 s each time, and the preferable settling time is 20 s.
Further, standing time in the third step is 12-18 h; the centrifugal parameter is 2500 rpm, and the centrifugal force is 10-20 min.
Further, in the fourth step, the drying parameter is 80-100 ℃ and the drying temperature is 4-6 h.
Compared with the prior art, the invention has the following beneficial effects.
(1) Calcining and quenching for 2 times, wherein each calcining time is 20 min, and the total calcining time is 40 min, so that the calcining time is shortened, and the time cost and the energy cost can be saved.
(2) The calamine is crisp through 2 times of calcining and quenching, so that the steps of cooling and crushing after calcining can be omitted, the operation flow is simplified, and the time cost and the equipment cost are saved.
(3) The water consumption per water flight is more than 40 times of the current water flight material quantity, so that the product yield is the highest, and the production efficiency is improved. The zinc oxide content in the product is high, the quality regulation in pharmacopoeia can be met, and the production results are all qualified products.
(4) The particle size of the obtained product is 1-10 mu m, meets the requirement of superfine powder particle size, and is beneficial to transdermal absorption of components to exert the drug effect.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example an optimization of water use and frequency of the calamine calcined quenching water fly processing method.
In order to ensure the consistency of the water-fly feeding, the calamine is calcined and crushed to obtain calcined calamine powder, and then the water-fly process parameters are compared, and the specific operation steps are as follows.
And (3) placing the raw calamine 120 g (the average ZnO content is 55.67%) with the diameter of about 7-9 mm in a muffle furnace, calcining at 700 ℃ for 1h, cooling, and properly crushing to obtain calcined calamine powder 90 g. Taking 8 parts of calamine powder, 8 parts of calamine powder g, and performing water-jet operation according to different water consumption, wherein the first grinding time is 6min, the second grinding time is 5min, and grinding for 4min each time. The water consumption is respectively as follows: 1 # The water consumption is 40 times of the weight of the initial material and 2 # ~8 # The first water consumption is 40 times of the weight of the initial material, and the second water consumption isThe second time is 40 times of the weight of the current material, and the third time is 2 # The water consumption is always 20 times of the weight of the initial material, 3 # The water consumption is 18 times of the weight of the initial material all the time, 4 # The water consumption is 16 times of the weight of the initial material all the time, 5 # The water consumption is always 14 times of the weight of the initial material, 6 # The water consumption is always 12 times of the weight of the initial material, 7 # The water consumption is always 10 times of the weight of the initial material, 8 # The water consumption is always 40 times of the weight of the current material. Recording the weight of residues after each sample is flown with water and the water consumption after each sample is flown with water until each sample can not be flown again; the product weight after each water flight of each sample was weighed and the product yield was calculated. The results are shown in tables 1 and 2.
TABLE 1 Water fly product yield/%
TABLE 2 relation between water consumption and Material quantity
As can be seen from the data in Table 1, 1 # The water is flown for 9 times, and the water is completely flown; 2 # ~8 # When the operation is carried out for 10 times, the product yield can reach more than 90%, the yield is slowly increased when the operation times are increased, and the residue amount is small, if the residue amount is 8 # The water consumption for operation is 40 times of the weight of the residue, the water level is lower under the condition of not replacing smaller equipment, and effective water flying cannot be realized, if the water consumption is 2 # ~7 # The water consumption for operation is hundreds of times or even hundreds of times of the residue, and the working hours and the cost are increased. Therefore, the number of temporary water flights is considered to be 10.
Analysis was performed in combination with the data of tables 1 and 2, with the higher water usage, the higher the product yield, but 5 # 、6 # And 7 # The water content of the sample is higher than 8 # However, the yield of the product was low, and it can be seen from the data in Table 2 that the yield was 7 # The water consumption of 4 times in the operation is lower than that of the current material40 times, 6 # 3 times of water consumption is 40 times lower than the current material amount in the operation, 5 # In the operation, the water consumption for 2 times is lower than 40 times of the current material amount, and the analysis shows that the single water consumption has a larger influence on the product yield when the water consumption for one time is lower than 40 times of the current material amount, so that the single water consumption is preferably not lower than 40 times of the current material amount.
In combination with the data in tables 1 and 2, the number of times of water flight after calcined calamine can be selected to be 10 times, and the water consumption is calculated to be 40 times 1, 30 times 2, 20 times 3-4, 15 times 5-6 and 10 times 7-10 respectively according to the amount of water flight materials.
The calcined product is directly put into water in the calcining and quenching process, and is not cooled and weighed, so that the water consumption of each calcining and quenching process is calculated according to the initial feeding amount of the raw calamine product, and the result of the previous-stage multiple measurement shows that the weight of the calcined calamine is reduced by about 22% -25%, namely, the weight of the calcined product is about 75% -78% of the feeding amount of the raw calamine product, and the water consumption of the calcining and quenching water in the calcining and quenching process is calculated according to 75%, and the technological parameters of the water consumption of each calcining and quenching water are as follows: the 1 st water consumption is 30-35 times of the feeding amount of the product, the 2 nd water consumption is 20-25 times, the 3 rd-4 rd water consumption is 15-20 times, the 5 th-6 th water consumption is 10-15 times, and the 7 th-10 th water consumption is 5-10 times.
Example two implementation of a calcined and quenched water fly processing method for calamine.
In the second embodiment of the invention, all the raw materials used in the experiment are the same batch, and the zinc oxide content is 64.85% measured by a coordination titration method.
The resulting calamine products of the examples were observed for particle size and uniformity of the samples under a 10x microscope using an optical microscope, and the particle sizes of 30 calamine powders were randomly measured in the field of view, and the average particle sizes were calculated after removing one maximum and one minimum.
Example 1: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 7-9 mm, putting 5 g into a calciner, calcining at 700 ℃ for 20 min, immediately putting into 2 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 20 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into 2 times of water, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 10 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-10 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 18-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 5 h.
The obtained product 3.66 and g had a yield of 73.2% and a zinc oxide content of 84.78% and an average particle diameter of 2.12. Mu.m.
Example 2: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small blocks with the diameter of 12-15 mm, putting 5 g into a calciner, calcining at 700 ℃ for 30 min, immediately putting into 3 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 30 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into water 3 times, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 10 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-10 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 18-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 5 h.
The obtained product 3.69. 3.69 g, the yield is 73.8%, the zinc oxide content is 83.22%, and the average particle size of the product is 1.68 μm.
Example 3: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 21-26 mm, putting 5 g into a calciner, calcining at 700 ℃ for 20 min, immediately putting 4 times of water into the calciner, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 20 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into water with the concentration of 4 times, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 10 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-10 th time 25 mL, and mixing suspension poured out by each time of water flight;
(3) Standing the combined suspension for 18-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 5 h.
The obtained product 3.61. 3.61 g had a yield of 72.2% and a zinc oxide content of 81.38% and an average particle diameter of 1.46. Mu.m.
Example 4: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 7-9 mm, putting 5 g into a calciner, calcining at 700 ℃ for 40 min, immediately putting into 2 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 40 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into 2 times of water, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 10 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-10 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 18-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 5 h.
The obtained product 3.56 and g has a yield of 71.2%, a zinc oxide content of 84.86% and an average particle diameter of 2.06 μm.
Example 5: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 7-9 mm, putting 5 g into a calciner, calcining at 700 ℃ for 20 min, immediately putting into 2 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 20 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into 2 times of water, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 8 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-8 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 18-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 5 h.
The obtained product 3.38. 3.38 g had a yield of 67.6%, a zinc oxide content of 82.42% and an average particle diameter of 1.38. Mu.m.
Example 6: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 7-9 mm, putting 5 g into a calciner, calcining at 700 ℃ for 20 min, immediately putting into 2 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 20 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into 2 times of water, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 12 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-12 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 18-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 5 h.
The obtained product 3.68 and g had a yield of 73.6% and a zinc oxide content of 81.32% and an average particle diameter of 1.64. Mu.m.
Example 7: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 7-9 mm, putting 5 g into a calciner, calcining at 700 ℃ for 20 min, immediately putting into 2 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 20 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into 2 times of water, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 10 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-10 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 12-h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 80℃for 6 h.
The obtained product 3.54. 3.54 g, yield 70.8%, zinc oxide content 83.16% and average particle size 1.92 μm.
Example 8: a calcined and quenched water fly processing method of calamine, which comprises the following steps:
(1) Crushing calamine into small pieces with the diameter of 7-9 mm, putting 5 g into a calciner, calcining at 700 ℃ for 20 min, immediately putting into 2 times of water, stirring while hot, pouring out water solution, and calcining residues at 700 ℃ for 20 min; standing the water solution to settle, discarding the upper water solution, and collecting residues;
(2) Adding the reddish calamine into 2 times of water, grinding the reddish calamine and the residues collected in the step (1) together while the reddish calamine and the residues are hot, grinding the mixture for 4min at 60 times/min, adding water for 10 times, wherein the water consumption is respectively 150 th time mL, 100 th time mL, 3-4 th time 75 mL, 5-6 th time 50 mL and 7-10 th time 25 mL, and mixing the suspension poured out by each time of water flight;
(3) Standing the combined suspension for 16: 16 h, and discarding the upper water solution; centrifuging the rest suspension, discarding water solution, and collecting precipitate;
(4) The resulting precipitate was dried at 100℃for 4 h.
The obtained product 3.60. 3.60 g, yield 72.0%, zinc oxide content 84.01% and average particle size 2.08 μm.
The above examples prove that the yield of the obtained product is higher, the zinc oxide content is higher, and the particle size of the product reaches the superfine powder specification under the process parameters of the application.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The calcined and quenched water fly processing method for calamine is characterized by comprising the following steps of:
step one: crushing calamine into small blocks with the diameter of 7-26 mm, putting the small blocks into a calciner for calcination until the calamine is red, calcining the calamine for 20-40 min at the specific calcining condition of 700 ℃, immediately putting the calamine into water, stirring the calamine while hot, and pouring out water to obtain residue I, wherein the specific water consumption is 2-4 times of the feeding amount of the product; standing the water solution to settle, discarding supernatant, and collecting residue to obtain residue II; calcining the residue I until the residue I is red;
step two: adding the reddish calamine into water, flying with the residue II collected in the step one, grinding into paste while hot, adding water into the calamine paste, stirring, settling coarse powder for 10-30 s, and pouring out suspension; adding water into the residue, repeatedly grinding and flying for 10 times, and mixing the poured suspension; the water consumption of each water flight is calculated according to the feeding quantity multiple of the raw product, wherein the 1 st water consumption is 30-35 times, the 2 nd water consumption is 20-25 times, the 3 rd water consumption to 4 th water consumption is 15-20 times, the 5 th water consumption to 6 th water consumption is 10-15 times, and the 7 th water consumption to 10 th water consumption is 5-10 times; setting the settling time of the coarse powder to be 10-30 s each time; the grinding speed is 60 times/min in each water flight operation, and the grinding time is 4-6 min;
step three: standing the combined suspension for 12-18 h, and discarding the upper water solution; centrifuging the rest suspension at 2500 rpm for 10-20 min, discarding water solution, and collecting precipitate;
step four: the resulting precipitate was dried to constant weight.
2. The method for processing calcined calamine by flying with quenching water according to claim 1, wherein the drying parameter in the fourth step is 80-100 ℃ and the drying parameter is 4-6 h.
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