CN109293450A - A kind of manufacturing method of sulfur acid potassium soil conditioner - Google Patents

A kind of manufacturing method of sulfur acid potassium soil conditioner Download PDF

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CN109293450A
CN109293450A CN201811438122.3A CN201811438122A CN109293450A CN 109293450 A CN109293450 A CN 109293450A CN 201811438122 A CN201811438122 A CN 201811438122A CN 109293450 A CN109293450 A CN 109293450A
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raw material
potassium
soil
gypsum
soil conditioner
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雷雨霖
林璟涵
雷志刚
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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80—Soil conditioners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
    • C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2101/00—Agricultural use

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Soil Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fertilizers (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

A kind of manufacturing method of sulfur acid potassium soil conditioner, this method are first to carry out complete chemical analysis to potassium-bearing mineral, gypsum, calcareous raw material, and whether the active constituent content and its heavy metal for detecting raw material meet Ministry of Agriculture's soil and fertilizer standard；Again by the not exceeded potassium-bearing mineral for meeting soil and fertilizer standard of content of beary metal, gypsum, calcareous raw material, it is homogenized in advance, keeps its chemical component, moisture relatively stable；Then the raw material after pre- homogenizing is further homogenized into raw material storage cavern by being crushed to diameter less than 5cm, it is made to must not exceed 0.5% in the fluctuation of chemical component；Ingredient, grinding, calcining, compounding, grinding, inspection and packaging i.e. manufacture are carried out afterwards again into the soil conditioner of the sulfur acid potassium.This invention simplifies process flows, only activate potassium element, and are incorporated a variety of middle microelements needed for soil, make the soil conditioner with rehabilitating soil function, can solve soil and mend the problem on obstacle such as potassium nutritional deficiency, simplify peasant household's application link.

Description

A kind of manufacturing method of sulfur acid potassium soil conditioner
Technical field
The invention discloses a kind of manufacturing methods of sulfur acid potassium soil conditioner, belong to agricultural soil fertilizer field.
Background technique
Potassium feldspar forms soil through the weathering of hundreds of millions of years, and wherein the potassium element of one of big element of crops three is in the soil K of the content generally between 3% ~ 7%, especially in potassium feldspar2The content of O is up to 8% ~ 10%, and some is even as high as 13%.(potassium Feldspar K2OAl2O3 6SiO2Although theoretical potassium content pass through long-term weathering, wherein some shape up to 16.9%) potassium element The available state potassium only deposited in the absorption soil of leaching and agricultural production irrigation and crop at available state, but due to rainwater is It is very limited, the needs of crop growth are far from satisfying, therefore, ensuring supply for potash fertilizer is deeply concerned to China's agricultural production Safety；
China is an agricultural production big country, and the potash fertilizer consumed every year has been over 10,000,000 tons, in spite of Qinghai Salt Lake and The big potash fertilizer base of Xinjiang Lop Nur two, but the reserves of two places are limited, is located in remote, has inconvenient traffic, fresh water is lacking, so that yield has Limit, at high cost, total supply amount is also less than 5,000,000 tons.Therefore, potash fertilizer external interdependency in China's is true still above 50% China's grain security is protected, is unanimously the project that China's science is competitively studied for potassium, activation potassium；
There are the trial using Mode of Shaft-kiln Sinter potassium feldspar production flue ash potash in five sixties of last century, China various regions, but Since potassium element evolution is limited, excessive potassium is still remained in clinker, causes concrete that alkali occurs, to give construction The service life for building object causes great hidden danger, therefore the seventies later period stops production substantially.To the eighties, external potash fertilizer Rapid rise of price, China buy potash fertilizer with a large amount of foreign exchange, this period, the country successively had 38 scientific research institutions to put into a large amount of people Power, material resources, financial resources carry out the research of potash fertilizer self-sufficiency, and Changsha designing institute of the Ministry of Chemical Industry first proposed using potassium feldspar in room temperature Production coproduction of potassium sulfate nano silica, silico-aluminum, lithopone, sodium carbonate etc. were decomposed in lower acidleach step by step, by 90 years In generation, has carried out the construction of Production Equipment of 2000 t Capacity Per potassium sulfate pilot scale line in Guizhou Wanshan Special Region, but due to potash fertilizer price fluctuation in recent years compared with Greatly, byproduct even more falls cost price out, therefore to today there is not yet the report to put into production；
Into 21st century, there are the Xue Yanhui of University Of Science and Technology Of Shandong, the stone forest of South China Science & Engineering University, China University of Geosciences in China Seminar's project verification using potassium feldspar using the report of sintering process production potash fertilizer, but the output of potash fertilizer and waste residue 1:15 ~ 20 is when The pressure of its cost and environmental protection, scale outputization are still remote；
Chinese scholar thunder will has just summarized the experience of forefathers' last 100 years research mineral potassic fertilizer, concentrates on studies more than 20 years, invents Utilize the technology of kalium contained mineral (potassium feldspar, potassium rock etc.) production potassium sulfate, potassium chloride coproduction special cement and calcium and magnesium phosphorus siliceous fertilizer Scheme, the package solution cost of potash fertilizer, the problems such as processing of tailings.But due to cement recessed market in recent years, in addition producing It can be limited by state macro-control, while Ministry of Industry and Information cannot be less than 4000T/D requirement to China's kiln industry production capacity, so that investment One group of production line just surpasses 1,000,000,000 yuans or more, leads to the report that yet there are no industrialization；
With the worsening of soil status, the country is badly in need of several hundred million tons of soil conditioners and solves acidification, hardened and its agricultural product weight The exceeded problem of metal, Chinese Academy of Sciences Liu build bright equal researchers and propose the research of damp and hot lime method activation potassium feldspar, produces per year 50000 tons of soil conditioner factory has gone into operation, but due to the limitation of the complete set of equipments such as energy consumption and its reaction kettle, short-term big rule The needs of mould launch meets several hundred million tons of China's soil conditioner also wants a very long process.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing method of sulfur acid potassium soil conditioner, to solve potash fertilizer it is self-supporting and The problem of agricultural production security, while solving the problems, such as that the soil conditioner of market in urgent need ensures agricultural product security, it supplements in soil Available state potassium, passivation chelate harmful heavy metal Cd, Cr, Pb, Hg, As in soil, and supplement moderate-element silicon, calcium, magnesium, sulphur Deng agricultural product security in, package solution acid soil, increasing yield and improving quality, synergy technical problem.
To solve its technical problem, the technical solution adopted by the present invention is that: first meeting soil and fertilizer standard, (heavy metal contains Must not measure exceeded) potassium-bearing mineral, gypsum, calcareous raw material, be homogenized in advance, keep its chemical component, moisture relatively stable, then By the raw material after pre- homogenizing by being crushed to diameter less than 5cm, further it is homogenized into raw material storage cavern, makes it in chemical component Fluctuation must not exceed 0.5%, then carry out ingredient, grinding, calcining, compounding, grinding, inspection and packaging i.e. manufacture into a kind of sulfur-bearing The soil conditioner of sour potassium.
Its manufacturing method includes the following steps:
(1) complete chemical analysis: mainly whether the active constituent content of detection raw material and its heavy metal meet Ministry of Agriculture's soil fertilizer Material standard；
A, potassium matter raw material: contain K2The various mineral raw materials of O >=6% such as potassium feldspar, potassium shale, carnallite, kainite, water potassium Magnesium alum etc.,
Main Analysis its: moisture, K2O 、CaO、Fe2O3、MgO、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As,
B, gypsum: the natural gypsum, chemical gypsum (i.e. ardealite, desulfurized gypsum, lemon gypsum, fluorine containing sulfur trioxide greater than 30% Gypsum etc.),
Main Analysis its: moisture, SO3、Fe2O3、CaO、MgO、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As；
C, calcareous raw material: raw materials of Ca O+MgO >=40% based on calcium carbonate, magnesium carbonate, containing limestone serous, dolomite, Dali Stone, chalk, marl etc.,
Main Analysis its: moisture, CaO, Fe2O3、MgO、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As；
D, fuel: mainly based on fire coal, but have good fuel oil, combustion gas, biomass, electricity more preferably, master when using coal-fired Detect moisture, CaO, MgO, Fe in calorific value and ash content2O3、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As；
(2) pre- homogenizing: standard compliant potassium matter raw material, gypsum, calcareous raw material and coal are homogenized in advance, make its effective component Fluctuation be no more than 2%, while must also ensure that various raw material have a reasonable storage capacity, prevent its chemical component and water The physical and chemical index divided has biggish fluctuation, for the qualified soil conditioner lay a good foundation of production；
(3) it is crushed: will be crushed by the qualified raw material of pre- homogenizing, according to raw material into the lumpiness of factory, be generally arranged two Grade is broken, is generally being less than 5cm by the control of broken raw mineral materials, material is then sent into material homogenizer library；
(4) it is homogenized: according to the fluctuation situation of raw material, in such a way that machinery falls library and Duo Ku collocation, so that raw material has The fluctuation of effect ingredient is strict controlled within 0.5%, qualification rate 100%；
(5) ingredient: generally phosphate-containing ore industry cutoff grade is 6%, high-quality ore 13%, therefore potassium matter raw material presses 6%≤K2O≤ 13% calculates,
Similarly, gypsum presses 30%S O3≤ 45%(45% is anhydrite),
Calcareous raw material 35%CaO+MgO55%,
It can thus be concluded that: potassium matter raw material 30 ~ 70%,
Gypsum 6 ~ 10%,
Calcareous raw material 24 ~ 60%；
(6) grinding: by above-mentioned potassium matter raw gypsum and calcareous raw material according to the requirement of soil measurement formula and various crops, by matching Than accurate ingredient, it is then fed into milling equipment grinding and is not more than 5% to 0.08mm square hole screen, screen over-size is crossed, is prepared into life Raw material feeding raw material silo is further homogenized (mechanical library or air stirring) and makes ingredient deviation K by material2O、CaO+MgO、SO3? No more than 0.2%, it is ensured that the reserves of its qualified raw material are able to satisfy " industrial enterprise's processing quality rule of management ".When using coal calcination When, coal with wind is swept coal, and to be milled to 180 mesh coal dusts stand-by:
(7) it is burnt into: qualified raw material conveyor being entered into the calcining of Pyatyi suspension precalciner kiln, firing temperature is controlled 10500C~ 11000C, firing time control was at 20 ~ 50 minutes, and clinker amount of liquid phase is not more than 30%, and porosity is no less than 50%, and volume controlled exists 0.95~1.05g/cm3, it is spare to be then fed into clinker warehouse cooling；
(8) it compounds: by the requirement of soil measurement formula and plantation variety of crops, it can be ensured that K2O >=4%(agricultural fertilizer standard, similarly hereinafter) when Add nitrogen and phosphate fertilizer and a variety of middle microelements, typical such as Zn, Mo, B, Se, become it is various it is functional contain potassium it is polynary in Microelement soil conditioner or compound fertilizer；
(9) grinding: being delivered to milling plant for compounding ingredient, and 60 mesh are being crossed in fineness control, is then fed into homogenizing packaging library and waits for Inspection；
(10) examine: the standard and company standard registered according to clay fertilizer examine its pH, K2O、CaO、MgO、SiO2, fineness, moisture And heavy metal Cd, the content of Cr, Hg, Pb, As can be packed and stored when indices meet following standard；
The project indicator
pH 10~12
K2O is more than or equal to 4%
CaO+MgO is more than or equal to 40%
SiO2More than or equal to 20%
Fineness is less than or equal to 60 mesh
Moisture is less than or equal to 2%
Cd is less than or equal to 2mg/kg,
Hg is less than or equal to≤2mg/kg,
As is less than or equal to 5mg/kg,
Pb is less than or equal to 30mg/kg,
Cr is less than or equal to 50mg/kg.
The present invention has following substantive features and marked improvement compared with the prior art:
(1) published utilization rich potassium mine manufacture potash fertilizer must convert potassium sulfate for effective potassium element or potassium chloride is separated, Complex process, one-time investment is big, and the comprehensive utilization of 15 ~ 20 times of tailings is also a problem, this invention simplifies process flow, Only potassium element is activated, and is incorporated a variety of middle microelements needed for soil, makes the soil with rehabilitating soil function Conditioner disposably solves soil and mends the problem on obstacle such as potassium nutritional deficiency, while also simplifying peasant household's application link；
(2) present invention burns temperature 1050 by control0C~11000C and amount of liquid phase, firing time are generated as its principal product With γ C2S loses gelling, and dusting can be also expanded after being manured into soil and absorbing moisture, thus solve excessively apply it is siliceous, The mineral fertilizers such as phosphorus, calcium cause the problem of soil hardening；
(3) principal product γ C of the invention2S, fast hydration generates free calcium ions and effective stratiform after being manured into soil Silicon, wherein calcium ion is reacted with water can increase soil pH value, be adjustable acid harm soil；The effective silicon of stratiform can not only supplement plant Silicon needed for object, and harmful heavy metal Cd, Cr, Hg, Pb, As in soil can be chelated；
(4) design considerations of various starting components
1, the weight percent content 30 ~ 70 of potassium prime element, it is therefore preferable to 35 ~ 65, it is containing K when setting ingredient as 702O≥ 6% is industrial cutoff grade, so that final product contains K after reaction2SO4>=4%, it is containing K when potassium prime element is greater than 302O >=13% meter, final product contains K after reaction2SO4Generally potassium matter raw material mainly contains SiO to >=3.9%.2, remaining is CaO, Fe2O3、 MgO、Al2O3Deng containing K2O is higher, and other oxide contents are just few, and vice versa；
2, the weight percent content of gypsum raw material is 6 ~ 10, it is therefore preferable to 7 ~ 9, when gypsum is more than 10, and (ingredient at this time Select low SO3Tailing tailings or chemical by-product gypsum) sulfate radical is completely and K2O reaction generates K2SO4Superfluous sulfate radical has afterwards It may overflow and form SO2、SO3,Subsequent desulfurization difficulty is caused to increase；When gypsum is less than 6, (ingredient selects high purity plaster at this time Or anhydrite), and enough sulfate radicals cannot be provided and reacted with potassium ion, so that potassium element does not activate sufficiently, it is converted to sulfuric acid Potassium, to not meet agriculture ministerial standard (K2O >=4%) fertilizer efficiency and functional decline；
3, the weight percent content 24 ~ 60 of calcareous raw material, it is therefore preferable to 29 ~ 55, when calcareous raw material plays 60 more, potassium matter Raw material and gypsum raw material supplying is corresponding reduces, when calcining, can generate a large amount of f CaO, f MgO, be more than so as to cause pH value 12, when application, causes the injury to biology, microorganism, enzyme etc. in soil；When calcareous raw material is less than 24, first is that potassium matter raw material In silicon cannot be separated completely with potassium, thus potassium matter raw material is not activated adequately, final product K2SO4Content is relatively low not only Ministry of Agriculture's clay fertilizer standard is not met, but also will affect fertilizer efficiency；Second is that the silicon in potassium matter raw material does not activate sufficiently, so that effective silicon Content is relatively low, so as to cause fertilizer efficiency reduction；
In short, the present invention makes full use of, kalium contained mineral raw material is equipped with calcareous raw material and gypsum is (natural equal with chemical by-product gypsum Can) be crushed by general machinery equipment, grinding, firing, compounding, grinding, inspection, pack the soil that a kind of sulfur acid potassium is just made Conditioner.This product can not only substitute part potash fertilizer, alleviate the deficiency of production domesticization supply, while can also repair acid harm soil Earth improves the crumb structure and gas permeability of soil, can also especially be passivated, chelate heavy metal, supplements micro member in soil Element, thus realize resource-effective property it is environmentally friendly achieve the purpose that it is production increases with quality up and cost of production down.
Specific embodiment
The embodiment of the soil conditioner manufacturing method of three sulfur acid potassium is described below, to the present invention furtherly It is bright:
Embodiment one, the soil conditioner manufacturing method of the first sulfur acid potassium, this method include as lower part is rapid:
(1) complete chemical analysis: the K of potassium matter raw material, gypsum, calcareous raw material, the calorific value of coal and ash content is detected respectively2O、 Fe2O3、CaO、MgO、SiO2、Al2O3And its heavy metal Cd, the content of Cr, Hg, Pb, As；
(2) it pre- homogenizing: is detected and standard compliant potassium matter raw material, gypsum, calcareous raw material, coal is marched into the arena pre- homogenizing, make it Various chemical components and its moisture are relatively stable, and wherein the fluctuation of principle active component must not exceed 2%；
(3) it is crushed: qualified various raw materials will be examined to be crushed to 5cm hereinafter, being then sent to material homogenizer library by pre- homogenizing；
(4) it is homogenized: the mode that mechanical library or the collocation of more libraries is respectively adopted in the various raw material in material homogenizer library is made into its original The effective component fluctuation of material is no more than 0.5%, qualification rate 100%；
(5) it ingredient: is adjusted in conjunction with the demand of soil and the crops planted to nutrient is surveyed according to the testing result of raw material Formula, when using K2High raw material (the K of O content2O≤13%), gypsum, which uses, contains SO3When low feed proportioning by weight percentage Proportion: potassium matter raw material 30, gypsum 10, calcareous raw material 60；
(6) grinding: ingredient resulting material is subjected to grinding, fineness control is crossing 180 mesh, is being then sent to raw material silo, using Library or air stirring, further homogenizing work as K to machinery2O、CaO+MgO、SO4 2-Ingredient deviation no more than 0.2% when, will close The raw material of lattice are sent into firing servo storehouse；
(7) it is burnt into: using Pyatyi suspension preheating precalciner kiln 10500C~11000C firing, firing time are controlled at 20 ~ 50 points Clock, clinker liquid phase are not more than 30%, and porosity is no less than 50%, and specific gravity control is in 0.95 ~ 1.05g/cm3, it is then fed into clinker warehouse Cooling is spare；
(8) it compounds: through soil measurement formula, in conjunction with the requirement of plantation variety of crops, when meeting K2When O >=4%, nitrogen and phosphorus can be added Fertile and a variety of middle microelements, typical such as Zn, Mo, B, Se, manufacture into various special-purpose soil conditioners (or compound fertilizer)；
(9) grinding: compounding material is delivered to milling plant, the control of fineness is crossing 60 mesh, it is to be checked to be then fed into packaging library；
(10) it examines: its pH, CaO, MgO, SiO is detected according to clay fertilizer listing standard and company standard2, fineness, moisture and its again Metal Cd, Cr, Hg, Pb, As；
(11) it packs: through examining qualification to be packed and stored.
The soil conditioner manufacturing method of two: second sulfur acid potassium of embodiment, this method comprises the following steps:
(1) complete chemical analysis: the K of potassium matter raw material, gypsum, calcareous raw material, the calorific value of coal and ash content is detected respectively2O、 Fe2O3、CaO、MgO、SiO2、Al2O3And its heavy metal Cd, the content of Cr, Hg, Pb, As；
(2) it pre- homogenizing: is detected and standard compliant potassium matter raw material, gypsum, calcareous raw material, coal is marched into the arena pre- homogenizing, make it Various chemical components and its moisture are relatively stable, and wherein the fluctuation of principle active component must not exceed 2%；
(3) it is crushed: qualified various raw materials will be examined to be crushed to 5cm hereinafter, being then sent to material homogenizer by pre- homogenizing Library；
(4) it is homogenized: the mode that mechanical library or the collocation of more libraries is respectively adopted in the various raw material in material homogenizer library is made into its original The effective component fluctuation of material is no more than 0.5%, qualification rate 100%；
(5) it ingredient: is adjusted in conjunction with the demand of soil and the crops planted to nutrient is surveyed according to the testing result of raw material The weight percent of formula, when using K2Lower raw material (the K of O content2O >=6%),
Potassium matter raw material 70, gypsum 6, calcareous raw material 24；
(6) grinding: ingredient resulting material is subjected to grinding, fineness control is crossing 180 mesh, is being then sent to raw material silo, using Library or air stirring, further homogenizing work as K to machinery2O、CaO+MgO、SO4 2-Ingredient deviation no more than 0.2% when, will close The raw material of lattice are sent into firing servo storehouse；
(7) it is burnt into: using Pyatyi suspension preheating precalciner kiln 10500C~11000C firing, firing time are controlled at 20 ~ 50 points Clock, clinker liquid phase are not more than 30%, and porosity is no less than 50%, and specific gravity control is in 0.95 ~ 1.05g/cm3, it is then fed into clinker warehouse Cooling is spare；
(8) it compounds: through soil measurement formula, in conjunction with the requirement of plantation variety of crops, when meeting K2When O >=4%, nitrogen and phosphorus can be added Fertile and a variety of middle microelements, typical such as Zn, Mo, B, Se, manufacture into various special-purpose soil conditioners (or compound fertilizer)；
(9) grinding: compounding material is delivered to milling plant, the control of fineness is crossing 60 mesh, it is to be checked to be then fed into packaging library；
(10) it examines: its pH, CaO, MgO, SiO is detected according to clay fertilizer listing standard and company standard2, fineness, moisture and its again Metal Cd, Cr, Hg, Pb, As；
(11) it packs: through examining qualification to be packed and stored.
Embodiment three: the soil conditioner manufacturing method of the third sulfur acid potassium, this method comprises the following steps:
(1) complete chemical analysis: the K of potassium matter raw material, gypsum, calcareous raw material, the calorific value of coal and ash content is detected respectively2O、 Fe2O3、CaO、MgO、SiO2、Al2O3And its heavy metal Cd, the content of Cr, Hg, Pb, As；
(2) it pre- homogenizing: is detected and standard compliant potassium matter raw material, gypsum, calcareous raw material, coal is marched into the arena pre- homogenizing, make it Various chemical components and its moisture are relatively stable, and wherein the fluctuation of principle active component must not exceed 2%；
(3) it is crushed: qualified various raw materials will be examined to be crushed to 5cm hereinafter, being then sent to material homogenizer library by pre- homogenizing；
(4) it is homogenized: the mode that mechanical library or the collocation of more libraries is respectively adopted in the various raw material in material homogenizer library is made The effective component fluctuation of its raw material is no more than 0.5%, qualification rate 100%；
(5) it ingredient: is adjusted in conjunction with the demand of soil and the crops planted to nutrient is surveyed according to the testing result of raw material The weight percent of formula, when using K2Medium 6%≤the K of raw material of O content2When O≤13%
Potassium matter raw material 50, gypsum 8, calcareous raw material 42；
(6) grinding: ingredient resulting material is subjected to grinding, fineness control is crossing 180 mesh, is being then sent to raw material silo, using Library or air stirring are further homogenized machinery, work as K2O、CaO+MgO、SO4 2-Ingredient deviation no more than 0.2% when, will close The raw material of lattice are sent into firing servo storehouse；
(7) it is burnt into: using Pyatyi suspension preheating precalciner kiln 10500C~11000C firing, firing time are controlled at 20 ~ 50 points Clock, clinker liquid phase are not more than 30%, and porosity is no less than 50%, and specific gravity control is in 0.95 ~ 1.05g/cm3, it is then fed into clinker warehouse Cooling is spare；
(8) it compounds: through soil measurement formula, in conjunction with the requirement of plantation variety of crops, when meeting K2When O >=4%, nitrogen and phosphorus can be added Fertile and a variety of middle microelements, typical such as Zn, Mo, B, Se, manufacture into various special-purpose soil conditioners (or compound fertilizer)；
(9) grinding: compounding material is delivered to milling plant, the control of fineness is crossing 60 mesh, it is to be checked to be then fed into packaging library；
(10) it examines: its pH, CaO, MgO, SiO is detected according to clay fertilizer listing standard and company standard2, fineness, moisture and its again Metal Cd, Cr, Hg, Pb, As；
(11) it packs: through examining qualification to be packed and stored.
It above are only three specific embodiments of the invention, but design concept of the invention is not limited to this, it is all to utilize this Design makes a non-material change to the present invention or replaces, and belongs to the behavior for invading the scope of the present invention.

Claims (8)

1. a kind of manufacturing method of sulfur acid potassium soil conditioner, it is characterized in that: this method is first to potassium-bearing mineral, gypsum, stone Grey matter raw material carries out complete chemical analysis, and whether the active constituent content and its heavy metal for detecting raw material meet Ministry of Agriculture's soil and fertilizer Standard；
Again by the not exceeded potassium-bearing mineral for meeting soil and fertilizer standard of content of beary metal, gypsum, calcareous raw material, carry out pre- equal Change, keeps its chemical component, moisture relatively stable；
Then the raw material after pre- homogenizing is further homogenized into raw material storage cavern by being crushed to diameter less than 5cm, is changing it The fluctuation studied point must not exceed 0.5%；
Ingredient, grinding, calcining, compounding, grinding, inspection and packaging i.e. manufacture are carried out afterwards again into the soil conditioning of the sulfur acid potassium Agent.
2. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: the complete chemical analysis: Including following content:
A, potassium matter raw material: to containing K2The various mineral raw materials of O >=6% such as potassium feldspar, potassium shale, carnallite, kainite, water potassium Magnesium alum, Main Analysis its: moisture, K2O 、CaO、Fe2O3、MgO、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As,
B, gypsum: to the natural gypsum containing sulfur trioxide greater than 30% and including ardealite, desulfurized gypsum, lemon gypsum, fluorgypsum Chemical gypsum, Main Analysis its: moisture, SO3、Fe2O3、CaO、MgO、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As；
C, calcareous raw material: to raw materials of Ca O+MgO >=40% based on calcium carbonate, magnesium carbonate and containing limestone serous, dolomite, big Fibrous gypsum, chalk, malmy raw material, Main Analysis its: moisture, CaO, Fe2O3、MgO、SiO2、Al2O3, Cd, Cr, Hg, Pb, As Content；
D, fuel: fuel includes fire coal, fuel oil, combustion gas, biomass or electricity, predominantly detects calorific value and ash content when using coal-fired In moisture, CaO, MgO, Fe2O3、SiO2、Al2O3, the content of Cd, Cr, Hg, Pb, As.
3. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: the pre- homogenizing: be by Standard compliant potassium matter raw material, gypsum, calcareous raw material and coal are homogenized in advance, and the fluctuation of its effective component is made to be no more than 2%, Simultaneously it must also ensure that various raw material have a reasonable storage capacity, prevent the physical and chemical index of its chemical component and moisture have compared with Big fluctuation, for the qualified soil conditioner lay a good foundation of production；
It is described broken: it is that will be crushed by the qualified raw material of pre- homogenizing, it is general to be arranged according to raw material into the lumpiness of factory Two-stage crushing is generally less than 5cm in diameter by the control of broken raw mineral materials, and it is equal that material is then sent into raw material Change library；
The further homogenizing is the fluctuation situation according to raw material, in such a way that machinery falls library and Duo Ku collocation, so that former The fluctuation of the effective component of material is strict controlled within 0.5%, qualification rate 100%.
4. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: ingredient: being that will contain potassium mine Lapicide's industry cutoff grade is 6%, high-quality ore 13%, therefore potassium matter raw material presses 6%≤K2O≤13% is calculated,
Gypsum is pressed into 30%S O3≤ 45%(45% is anhydrite) it is calculated,
Calcareous raw material is calculated by 35%CaO+MgO55%,
Thus the weight percent of raw material: potassium matter raw material: 30 ~ 70 is obtained；Gypsum raw material: 6 ~ 10；
Calcareous raw material: 24 ~ 60.
5. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: the grinding: being will be upper Potassium matter raw material, gypsum and calcareous raw material are stated, according to the requirement of soil measurement formula and various crops, accurate ingredient according to the ratio, so It is sent into milling equipment grinding afterwards and is not more than 5% to 0.08mm square hole screen, screen over-size is crossed, is prepared into raw material, then raw material are sent into raw material Library is further homogenized, and mechanical library or air stirring is carried out, so that ingredient deviation K2O、CaO+MgO、SO3No more than 0.2%, really The reserves for protecting its qualified raw material are able to satisfy " industrial enterprise's processing quality rule of management "；When using coal calcination, coal is swept with wind It is stand-by that coal was milled to 180 mesh coal dusts.
6. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: the firing: being that will close The raw material conveyor of lattice enters the calcining of Pyatyi suspension precalciner kiln, and firing temperature is controlled 1050 ~ 11000C, firing time control System was at 20 ~ 50 minutes, and clinker amount of liquid phase is not more than 30%, and porosity is no less than 50%, and volume controlled is in 0.95 ~ 1.05g/cm3, so It is spare that it is sent into clinker warehouse cooling afterwards.
7. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: the compounding: according to survey The requirement of soil formula and plantation variety of crops, it is ensured that K2To be added when the agricultural fertilizer standard of O >=4% nitrogen and phosphate fertilizer and it is a variety of in it is micro- Secondary element, such as Zn, Mo, B, Se become various functional containing the polynary middle microelement soil conditioner of potassium or compound fertilizer；It is described Grinding is that compounding ingredient is delivered to milling plant to carry out grinding, and fineness controls within 60 mesh, is then fed into homogenizing packaging Library is to be checked.
8. the manufacturing method of sulfur acid potassium soil conditioner according to claim 1, it is characterized in that: the inspection: being basis The standard and company standard of clay fertilizer registration, examine its pH, K2O、CaO、MgO、SiO2, fineness, moisture and heavy metal Cd, Cr, Hg, The content of Pb, As can be packed and stored when indices meet following standard,
The project indicator
pH 10~12
K2O is more than or equal to 4%
CaO+MgO is more than or equal to 40%
SiO2More than or equal to 20%
Fineness is less than or equal to 60 mesh
Moisture is less than or equal to 2%
Cd is less than or equal to 2mg/kg,
Hg is less than or equal to≤2mg/kg,
As is less than or equal to 5mg/kg,
Pb is less than or equal to 30mg/kg,
Cr is less than or equal to 50mg/kg.
CN201811438122.3A 2018-11-29 2018-11-29 A kind of manufacturing method of sulfur acid potassium soil conditioner Pending CN109293450A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1793065A (en) * 2005-11-28 2006-06-28 四川大学 Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1793065A (en) * 2005-11-28 2006-06-28 四川大学 Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
詹益兴 等: "《合理用肥手册》", 31 October 2016, 科学技术文献出版社，第1版 *

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