CN1206703A - Silicon-calcium-magnesium fertilizer - Google Patents
Silicon-calcium-magnesium fertilizer Download PDFInfo
- Publication number
- CN1206703A CN1206703A CN 97115601 CN97115601A CN1206703A CN 1206703 A CN1206703 A CN 1206703A CN 97115601 CN97115601 CN 97115601 CN 97115601 A CN97115601 A CN 97115601A CN 1206703 A CN1206703 A CN 1206703A
- Authority
- CN
- China
- Prior art keywords
- slag
- sio
- calcium
- chemical fertilizer
- magnesium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/04—Calcareous fertilisers from blast-furnace slag or other slags containing lime or calcium silicates
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention provides a magnesium-calcium-silicon chemical fertilizer prepared by using waste slag in iron and steel industry. Said invented chemical fertilizer is made up by using steel slag,blast furnace grain slag, calcined magnesio-dolomite offscum, vertical kiln flue ash and white residue as raw materials, and adopting such processes as breaking, screening, magnetic separation, proportioning, fine-grinding and homogenization. Said invented chemical fertilizer is low in production cost, simple in production process, can obviously raise the yield of crops of rice, peanut, maize, cane and jute, etc., and can raise their resistance to insect pest and plant diseases, and can effectively prevent soil from hardening.
Description
The present invention relates to a kind of inanimate matter composite chemical fertilizer, the particularly silicon-calcium-magnesium fertilizer of in the waste residue of Iron and Steel Production, producing.
At present, silicon-calcium-magnesium fertilizer also occurs, and the chemical fertilizer that uses on the agricultural, be used as fertilizer and soil conditioner is mainly fused(calcium magnesium)phosphate (seeing chemical standard HG2557-94).Fused(calcium magnesium)phosphate is to be raw material with Rock Phosphate (72Min BPL) with the ore that contains magnesium, silicon, in blast furnace or electric furnace through high-temperature fusion, shrend, drying and levigate made forming, production cost height, complex manufacturing.Utilize the silico-calcium magnesium chemical fertilizer and the fused(calcium magnesium)phosphate of slag production that close effectiveness is arranged, and cheap, production technique is simple.Adopt slag to produce the slag chemical fertilizer, application is at home and abroad early arranged.France and Luxembourg utilize slag to produce phosphate fertilizer in conjunction with the characteristics of its national middle and high kakoxene and method for making steel.Japan, Korea also utilize slag to produce siliceous fertilizer.China Baotou Iron and Steel Company and Ma'anshan Iron and Steel Corp once did to utilize the test (" metallurgical industry waste residue treatment process collects with utilizing scientific and technological achievement " nineteen eighty-three) of slag production phosphate fertilizer, Lianyuan Iron ﹠ Steel Factory also utilizes slag to produce siliceous fertilizer (" Hunan metallurgy " second phase in 1985), but fails to promote.Above-mentioned country and the enterprise that utilizes slag to produce chemical fertilizer all is in conjunction with phosphorus in the slag own, characteristics that silicone content is high, in order to produce single fertilizer such as phosphate fertilizer and siliceous fertilizer, do not find in order to produce silicon-calcium-magnesium compound fertilizer.
The purpose of this invention is to provide a kind of low silicon, low-phosphorous slag of adopting is silicon-calcium-magnesium fertilizer main material production, that simple, cheap, the suitable agricultural of production technique is upward used, solve areas to the south, China the Changjiang river acid soil lack silicon, calcium, magnesium problem, and slag contaminate environment, occupied ground problem.
The composition and the content requirement of chemical fertilizer of the present invention are: validity calcium contents (in CaO) is 25～50%, and validity Mg content (in MgO) is 6～20%, and silicone content is (with SiO
2Meter) be 8～35%.Surplus is other contained in slag and proportion material trace ingredientss, and the surplus composition is P
2O
5, MnO, SO
3, Fe
2O
3, Fe, Al
2O
3, P wherein
2O
5Content is 2～6%.
Wherein be divided into 1# chemical fertilizer and 2# chemical fertilizer again: the composition of 1# chemical fertilizer and content requirement are: validity calcium contents (in CaO) is 25～50%, and effectively Mg content (in MgO) is 6～20%, and silicone content is (with SiO
2Meter) be 15～35%; The composition of 2# chemical fertilizer and scope: validity calcium contents (in CaO) is 27～50%, and effectively Mg content (in MgO) is 8～20%, and silicone content is (with SiO
2Meter) be 8～35%.
It is raw material that this chemical fertilizer adopts the waste residue that produces in Liuzhou Iron and Steel's production.Raw material comprises the slag that converter and/or Electric furnace steel making produce, the blast furnace granulated slag that blast furnace ironmaking produces, the shaft kiln ash in vertical limestone kiln, the white residue that produces in waste residue that the calcined magnesium rhombspar produces and the production, the solubility in citric acid calcium, magnesium, silicon, phosphorous oxides and some the micro-nutrient elements that contain different content in the raw material, as iron, manganese, sulphur etc., and raw material do not contain the deleterious heavy metal element of farm crop as lead, cadmium, chromium, do not have radioelement yet.Raw material is alkalescence or weakly alkaline, and pH value is 7.5～12, and its main component and scope (weight percent) are:
Slag: CaO 28～50%, MgO 3～10%, SiO
28～22%;
Blast furnace granulated slag: CaO 33～41%, MgO 6～15%, SiO
228～36%;
Calcined magnesium rhombspar waste residue: CaO 40～56%, MgO 34～43%, SiO
24～8%;
Shaft kiln ash: CaO 35～58%, MgO 1～3%, SiO
29～24%;
White residue: CaO 2～4%, MgO 1～3%, SiO
270～95%.Rest part is an impurity, is mainly P
2O
5, MnO, SO
3, Fe
2O
3, Fe, Al
2O
3, Al wherein
2O
3Content must not be greater than 15%.
Wherein slag is a main raw material, and all the other are the adapted raw material, according to the composition requirement of the composition and the product of main raw material, can allocate into or does not allocate the adapted raw material into, or allocate one or more adapted raw materials into.Can be main raw material with the blast furnace granulated slag also, all the other be the adapted raw material.The proportioning of each component (weight percent) is as follows:
Slag: 0～100%
Blast furnace granulated slag: 0～100%
Calcined magnesium rhombspar waste residue: 0～20%
Shaft kiln ash: 0～20%
White residue: 0～10% each component sum is 100% (weight).
For improving the content of phosphorus in the chemical fertilizer, can also allocate 0～20% Rock Phosphate (72Min BPL) into.
Raw material can carry out proportioning according to following situation:
1. when adopting CaO 〉=25%, MgO 〉=6%, SiO
2〉=15% slag is produced the 1# chemical fertilizer or is adopted CaO 〉=27%, MgO 〉=8%, SiO
2When 〉=8% slag is produced the 2# chemical fertilizer, can adopt slag to do raw material fully, need not allocate other raw materials into;
2. when the slag that adopts MgO≤6% is produced the 1# chemical fertilizer or adopt the slag of MgO≤8% to produce the 2# chemical fertilizer, need in slag, allocate into one in blast furnace granulated slag, the calcined magnesium rhombspar waste residue or two kind, make MgO content reach requirement;
3. when adopting SiO
2When≤15% slag is produced the 1# chemical fertilizer, or after in slag, allocating calcined magnesium rhombspar waste residue into, SiO
2When content is lower than requirement, need in slag, to allocate into one in blast furnace granulated slag, the white residue or two kind, make SiO
2Content reaches requirement;
4. after in slag, allocating white residue into, when CaO content is lower than requirement, need allocate in blast furnace granulated slag, calcined magnesium rhombspar waste residue, the shaft kiln ash one or several again into, make CaO content reach requirement;
5. when blast furnace granulated slag is sufficient, also can all adopt blast furnace granulated slag to produce 1# and/or 2# chemical fertilizer, when the blast furnace granulated slag that adopts MgO≤8% is produced the 2# chemical fertilizer, need allocate calcined magnesium rhombspar waste residue or the high slag of MgO content into.
The method of proportion of raw materials can adopt trial and error method and mathematical computations method.More after a little while, adopt trial and error method progressively to approach at the raw material type that adopts.When at the raw material type that adopts more for a long time, can adopt the mathematical computations method.The mathematical computations method is that the composition according to the kind of raw material and chemical ingredients, product requires to set up system of equations with the principle of material balance, obtains the weight of the required proportioning of each raw material.
The manufacturing processed of chemical fertilizer of the present invention is:
1. slag is carried out fragmentation, slag, iron are separated, utilize magnetic separation, reclaim wherein iron and oxide compound thereof.Last tailings is looked its iron level, and what carry out fragmentation, screening, magnetic separation again, reduce the content of iron in the tailings, and last slag tailings is the main raw material of making this chemical fertilizer;
With blast furnace granulated slag, shaft kiln ash, calcined magnesium rhombspar waste residue, white residue as the adapted raw material, its effect is a content of adjusting silicon, calcium, magnesium;
3. measure the SiO of main raw material and adapted raw material
2, CaO, MgO and TFe, AL
2O
3Content and pH value, and require AL in the adapted raw material
2O
3Must not be greater than 15%;
4. with raw material stoving or dry, make its moisture content≤4% (weight).
5. main raw material and adapted raw material are carried out proportioning.
6. the various raw materials after the proportioning are carried out batch mixing, levigate, make by 216 μ M standard sieve 〉=90%, generally be ground to 100 orders, the gained mixture is this chemical fertilizer, and packing gets final product after the homogenizing.
When being main raw material with the blast furnace granulated slag, its production process is pressed 3,4,5,6 steps of said process.
The advantage of chemical fertilizer of the present invention is:
1. can effectively replenish silicon, calcium, magnesium elements in the soil, improve the yield and quality of farm crop, and improve disease-resistant crops, anti-covering could power.
Test-results shows, paddy rice is being used on the basis of azophoska, execute this chemical fertilizer of 50kg for every mu, demonstration test increasing yield of paddy amount is at 20.6～41.1kg/ mu, between the stimulation ratio 5.0～14%, average out to 33.0kg/ mu and 8.3% shows that mainly real number of the every fringe that increases paddy rice and grain are heavy, and can strengthen disease-resistant, the lodging tolerance of paddy rice, paddy rice line disease and panicle blast disease reduce by 59.5～82.9% and 54.1～53.3% respectively.
This chemical fertilizer can obviously improve peanut, corn, sugarcane and jute output, and is the most obvious with peanut especially.Test-results shows, peanut mu fertilising 50kg, volume increase 51.1kg/ mu, stimulation ratio 26.9%.Corn mu fertilising 50kg, volume increase 31.7kg, stimulation ratio 10.4%.Jute mu fertilising 50kg, volume increase 26.2kg, stimulation ratio 15.0%; Mu fertilising 75kg, volume increase 32kg, stimulation ratio 18.3%.Sugarcane mu fertilising 75kg, 0.47 ton in volume increase sugarcane footpath, stimulation ratio 8.9%, sugar degree increases by 0.59% (absolute content).
2. the manufacturing raw material of this chemical fertilizer all is the grog through high-temperature calcination, saved the necessary calcination process of traditional mode of production inanimate matter chemical fertilizer, so production process is simple, cost is low, only is the 30-50% of fused(calcium magnesium)phosphate.
3. owing to adopt waste residue as raw material in the Iron and Steel Production, both can increase economic benefit of enterprises, and can reduce the stacking place of waste residue again and, turn waste into wealth, be beneficial to environmental protection the pollution of environment, water quality.
4. owing to adopt slag waste residue in the Iron and Steel Production, blast furnace granulated slag, calcined magnesium rhombspar waste residue, shaft kiln ash etc. as raw material, so raw materials cost is low, and is cheap.
5. the main raw material of this chemical fertilizer manufacturing is a slag, because the expansion of slag makes earth bulk, effectively prevents hardening of soil.
Embodiment 1: will contain CaO 41.16%, MgO 8.42%, SiO
216.89% slag crushing, screening, magnetic separation, levigate, homogenizing are made 1# or 2# chemical fertilizer, and its finished product composition and content are CaO 41.16%, MgO 8.42%, SiO
216.89%.
Embodiment 2: 85% slag through fragmentation, screening, magnetic separation (is contained CaO 42.18%, MgO 5.17%, SiO
215.9%) is equipped with 15% calcined magnesium rhombspar waste residue and (contains CaO6.85%, MgO 35.62%, SiO
24.37%), makes the 2# chemical fertilizer through levigate, homogenizing.Its finished product composition and content are CaO 36.85%, MgO 9.74%, SiO
214.17%.
Embodiment 3: 80% slag through fragmentation, screening, magnetic separation (is contained CaO 42.18%, MgO 5.17%, SiO
215.9%) is equipped with 15% calcined magnesium rhombspar waste residue and (contains CaO6.85%, MgO 35.62%, SiO
24.37%) and 5% white residue (contain CaO 2.33%, MgO1.47%, SiO
285.19%), makes the 1# chemical fertilizer through levigate, homogenizing.Its finished product composition and content are CaO 34.88%, MgO 9.55%, SiO
217.63%.
Embodiment 4: 60% slag through fragmentation, screening, magnetic separation (is contained CaO 42.58%, MgO 3.88%, SiO
210.23%) is equipped with 40% blast furnace granulated slag and (contains CaO 36.45%, MgO11.8%, SiO
231.11%), makes the 1# chemical fertilizer through levigate, homogenizing.Its finished product composition and content are CaO 39.54%, MgO 7.04%, SiO
218.13%.
Embodiment 5: 90% slag through fragmentation, screening, magnetic separation (is contained CaO 45.61%, MgO 8.16%, SiO
212.03%) is equipped with 10% white residue and (contains CaO 2.56%, MgO2.03%, SiO
286.9%), makes the 1# chemical fertilizer through levigate, homogenizing.Its finished product composition and content are CaO 41.3%, MgO 7.55%, SiO
219.51%.
Embodiment 6: 70% slag through fragmentation, screening, magnetic separation (is contained CaO30.16%, MgO8.69%, SiO
213.73%) is equipped with 20% blast furnace granulated slag and (contains CaO 35.5%, MgO7.32%, SiO
231.6%), 5% calcined magnesium rhombspar waste residue (contains CaO 37.7%, MgO38.92%, SiO
25.65%), 5% shaft kiln ash (contains CaO 50.37%, MgO 1.24%, SiO
220.68%), make this chemical fertilizer through levigate, homogenizing, its finished product composition and content are CaO32.61%, and MgO 9.56%, SiO
217.25%.
Embodiment 7: blast furnace granulated slag (is contained CaO 43.83%, MgO 9.36%, SiO
230.62%) make this chemical fertilizer through levigate, homogenizing, its finished product composition and content are CaO43.83%, MgO 9.36%, SiO
230.62%.
Embodiment 8: 90% blast furnace granulated slag (is contained CaO 45.6%, MgO 6.54%, SiO
231.74%) is equipped with 10% calcined magnesium rhombspar waste residue and (contains CaO 42.6%, MgO 35.43%, SiO
26.24%), make this chemical fertilizer through levigate, homogenizing, its finished product composition and content are CaO45.3%, and MgO 9.43%, SiO
229.19%.
Claims (5)
1. silicon-calcium-magnesium fertilizer that the waste residue that adopts Iron And Steel Industry to produce is made, it is characterized in that: raw material mainly is made up of slag, blast furnace granulated slag, calcined magnesium rhombspar waste residue, shaft kiln ash and white residue, through proportioning, levigate, composition that homogenizing forms, its composition and content range are: CaO25～50%, MgO6～20%, SiO
28～35%.
2. silicon-calcium-magnesium fertilizer according to claim 1, it is characterized in that: its composition and content range are: CaO25～50%, MgO6～20%, SiO
215～35%.
3. silicon-calcium-magnesium fertilizer according to claim 1, it is characterized in that: its composition and content range are: CaO27～50%, MgO8～20%, SiO
28～35%.
4. silicon-calcium-magnesium fertilizer according to claim 1 is characterized in that: the ratio of each component is:
Slag: 0～100% (weight)
Blast furnace granulated slag: 0～100% (weight)
Calcined magnesium rhombspar waste residue: 0～20% (weight)
Shaft kiln ash: 0～20% (weight)
White residue: 0～10% (weight)
5. silicon-calcium-magnesium fertilizer according to claim 1, it is characterized in that: composition grain is less than 100 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97115601 CN1206703A (en) | 1997-07-24 | 1997-07-24 | Silicon-calcium-magnesium fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97115601 CN1206703A (en) | 1997-07-24 | 1997-07-24 | Silicon-calcium-magnesium fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1206703A true CN1206703A (en) | 1999-02-03 |
Family
ID=5173315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97115601 Pending CN1206703A (en) | 1997-07-24 | 1997-07-24 | Silicon-calcium-magnesium fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206703A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870613A (en) * | 2010-07-21 | 2010-10-27 | 鄢桂生 | Multifunctional low-carbon pollution-free magnesium hydroxide fertilizer |
| CN101891521A (en) * | 2010-08-05 | 2010-11-24 | 遵化市励拓环保科技有限公司 | Silicon-calcium-magnesium-sulfur fertilizer and preparation process thereof |
| CN102391021A (en) * | 2011-08-15 | 2012-03-28 | 广州钢铁企业集团有限公司 | Method for producing silicon-calcium-magnesium fertilizer by using ironmaking blast furnace water-quenching slag as raw materials |
| CN105347907A (en) * | 2015-10-19 | 2016-02-24 | 福建金土地生物科技有限公司 | Biochar-based fertilizer for restoration of heavy metal contamination of arable soil |
| CN107382609A (en) * | 2017-03-31 | 2017-11-24 | 大连环球矿产股份有限公司 | It is a kind of to utilize siliceous fertilizer (soil conditioner) of wollastonite mine tailing production and preparation method thereof |
| CN108865151A (en) * | 2017-05-09 | 2018-11-23 | 佛山市植宝生态科技有限公司 | A kind of renovation agent and preparation method thereof that can administer heavy metal cadmium soil |
| CN110550984A (en) * | 2019-10-12 | 2019-12-10 | 安徽工业大学 | Method for producing silicon-calcium-magnesium compound fertilizer by using steel slag, magnesium reducing slag and manganese slag |
| CN113185362A (en) * | 2021-03-16 | 2021-07-30 | 营口菱镁化工集团有限公司 | Multi-effect calcium magnesium fertilizer particle and preparation method thereof |
-
1997
- 1997-07-24 CN CN 97115601 patent/CN1206703A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870613A (en) * | 2010-07-21 | 2010-10-27 | 鄢桂生 | Multifunctional low-carbon pollution-free magnesium hydroxide fertilizer |
| CN101891521A (en) * | 2010-08-05 | 2010-11-24 | 遵化市励拓环保科技有限公司 | Silicon-calcium-magnesium-sulfur fertilizer and preparation process thereof |
| CN102391021A (en) * | 2011-08-15 | 2012-03-28 | 广州钢铁企业集团有限公司 | Method for producing silicon-calcium-magnesium fertilizer by using ironmaking blast furnace water-quenching slag as raw materials |
| CN102391021B (en) * | 2011-08-15 | 2013-09-18 | 广州钢铁企业集团有限公司 | Method for producing silicon-calcium-magnesium fertilizer by using ironmaking blast furnace water-quenching slag as raw materials |
| CN105347907A (en) * | 2015-10-19 | 2016-02-24 | 福建金土地生物科技有限公司 | Biochar-based fertilizer for restoration of heavy metal contamination of arable soil |
| CN105347907B (en) * | 2015-10-19 | 2018-11-16 | 福建金土地生物科技有限公司 | Charcoal base manure material is repaired for Heavy Metal Pollution In Cultivated Land |
| CN107382609A (en) * | 2017-03-31 | 2017-11-24 | 大连环球矿产股份有限公司 | It is a kind of to utilize siliceous fertilizer (soil conditioner) of wollastonite mine tailing production and preparation method thereof |
| CN108865151A (en) * | 2017-05-09 | 2018-11-23 | 佛山市植宝生态科技有限公司 | A kind of renovation agent and preparation method thereof that can administer heavy metal cadmium soil |
| CN110550984A (en) * | 2019-10-12 | 2019-12-10 | 安徽工业大学 | Method for producing silicon-calcium-magnesium compound fertilizer by using steel slag, magnesium reducing slag and manganese slag |
| CN113185362A (en) * | 2021-03-16 | 2021-07-30 | 营口菱镁化工集团有限公司 | Multi-effect calcium magnesium fertilizer particle and preparation method thereof |
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