CN1113901A - Preparing method for calcium silicate fertilizer - Google Patents
Preparing method for calcium silicate fertilizer Download PDFInfo
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- CN1113901A CN1113901A CN94106111A CN94106111A CN1113901A CN 1113901 A CN1113901 A CN 1113901A CN 94106111 A CN94106111 A CN 94106111A CN 94106111 A CN94106111 A CN 94106111A CN 1113901 A CN1113901 A CN 1113901A
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- Prior art keywords
- fertilizer
- coal
- calcium silicate
- calcium
- waste liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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Abstract
The present invention utilizes the principle of solid phase catalysis and the theory of coal burning, mixes directly the industrial waste liquid or waste slag (for example the black liquor of paper mill) coal and catalyst (including CaF2, CaCO3, quick lime, a little amount of silicate, nitrate, ferro-compound and manganese-compound etc.) in accordance with a specific weight proportion, the they are burned under 800-1200 deg.C of temp., the burned coal slags are ground and sieved, the Si-Ca fertilizer with over 30% of effective silicon is obtained. Said Si-Ca fertilizer and the chemically processed apatite are mixed, ground and sieved to obtain the Si-Ca-P fertilizer with over 25% of available silicon and over 5% of available phosphorous.
Description
The invention belongs to the manufacture method of fertilizer, mainly relate to the preparation method of calcium silicate fertilizer and silico-calcium phosphate fertilizer.
The farmland of siliceous fertilizer (mainly comprising calcium silicate fertilizer and silico-calcium phosphate fertilizer) is used and has been subjected to pay attention to day by day both domestic and external.The Britain agronomist thinks that nitrogen phosphorus potassium has been brought into play almost to the production-increasing function of farm crop, and existing farm crop also will be increased production, and will lean on siliceous fertilizer.In Japan, siliceous fertilizer is used in existing 70～75% farmland, and also siliceous fertilizer is used in existing 50～60% farmland in Korea S, Taiwan etc.Siliceous fertilizer not only has production-increasing function to many farm crop, and strengthens the effect of aspects such as farm crop resistance against pests and diseases in addition.As, siliceous fertilizer can improve cell walls intensity to paddy rice, strengthens resistant to lodging and ability disease and insect resistance; And make that plant is tall and straight, the blade subtended angle reduces, and improved the performance of plant printing opacity, make blade all increased by light equilibrium, photosynthetic gesture and photosynthetic productivity, improve ventilating tissue, promote the root system oxidizing power.Siliceous fertilizer not only can increase production 20～50% to sugarcane, and can improve the sugar part content 3～12% of sugarcane.
So far, the preparation method of siliceous fertilizer has following three kinds:
1, report as " chemical fertilizer industry " 1991 the 6th phase 24-26 pages or leaves, with the method that chemical substance directly prepares, it is raw material with water glass, and utilization hig h-speed centrifugal spray drying legal system is equipped with siliceous fertilizer.Product with this method acquisition, have silicon cellulose content height (effectively silicon reach 50-60%), easily reach advantages such as quick-acting, but it on the high side, can not in the siliceous fertilizer manufacturing, reach " turning waste into wealth ", environmental or the like simultaneously, and, " sodium " in the water glass and " aluminium " are disadvantageous to soil, " sodium " has dissemination to soil, more mostly be the red-yellow soil of " the rich aluminium of desiliconization " of long-term weathering greatly because of soils in south china, therefore, the material of water glass and so on is unfavorable to soils in south china, and calcium silicate fertilizer is then comparatively favourable.
2, state such as Japan and the United States five, the sixties directly use slag, natural wollastonite ［ Ca such as flyash, steelworks
3(Si
3O
9) etc. use as siliceous fertilizer.Though these siliceous fertilizers are inexpensive, it is quite low to contain effective silicon, mostly below 10%.
3, as patent documentation CN1,056,863, JP0459,614; JP61,155,283 is pointed, obtains siliceous fertilizer by waste residue, mineral substance, inexpensive material after chemistry, physical treatment, and wherein the simplest have usefulness shrend phosphorus ore slag such as Liuzhou phosphate fertilizer plant to produce siliceous fertilizer.This method is simple, and effectively the content also higher (between the first two kind method) of silicon has use value preferably.This siliceous fertilizer was both inexpensive, handy, helped environmental protection or the like again.Yet, in process of production, for China current outstanding energy-conservation, economize on coal, how problem such as environmental protection to combine better, plays still shortcoming very of bigger effect.
So, at the shortcoming of above the whole bag of tricks, draw their advantage, purpose of the present invention just is: (1) makes the content of effective silicon higher, can reach about 30%; (2) waste water, the residue contamination problem of environment of solution factory; The purpose of (3) reach energy-conservation, economizing on coal.
For realizing this three goals of the invention, we directly produce siliceous fertilizer with trade effluent, waste residue in coal combustion process.Its theoretical foundation and concrete operations step are as follows:
Principle and coal combustion scheduling theory according to solid catalysis, the first step is mixed trade effluent (as paper mill black liquor, printing and dyeing mill's waste liquid, factory's bleaching waste liquor or the like) and industrial coal (bituminous coal, anthracite or its mix coal all can) mutually, and its part by weight is a coal: waste liquid=1: 0.1～1; Second step added catalyzer again, as CaF
2, CaCO
3, unslaked lime, small amounts of silicate, nitrate, iron cpd, manganic compound or the like (these materials will mix earlier, grind thin).The weight ratio of waste liquid and catalyzer is a waste liquid: catalyzer=1: 0.005～0.5; The 3rd step made coal, waste liquid (waste water) and catalyzer three mix again, put it into the burning or (for the industry use) about 0.5～1 hour of directly burning in Industrial Boiler in 800～1200 ℃ the stove; The 4th the step, with products therefrom (being the waste coal slag) through porphyrize, sieve get final product calcium silicate fertilizer.Through after these several steps, as seen make coal combustion complete, and the waste gas of its discharge is reduced.After measured, with the calcium silicate fertilizer that this method is produced, its index is: effective silicon about 30%, effective calcium about 20%, moisture content＜3%, fineness 80～120 orders.
Outstanding advantage of the present invention can be narrated from following four aspects:
1, trade effluent (as paper mill black liquor, printing and dyeing mill's waste liquid, industrial bleaching waste liquid or the like) needn't enter rivers, and can obtain utilizing, and this has significantly reduced environmental pollution;
2, make the waste gas of discharging in the coal combustion process, as SO
2, obnoxious flavour such as oxynitride significantly reduces.We burn the anthracite that adds our catalyzer with the anthracite that does not add our catalyzer, respectively the gas that produces is fed H then
2O
2In the aqueous solution, carry out titration with standard alkali solution again, comparing result is as follows:
Anthracite (5 gram)+catalyzer (on a small quantity) anthracite burning (5 gram)
Consumption NaOH(0.1034N) 8.5ml consumes NaOH(0.1034N) 18.7ml
Organize data as seen from this, the harmful exhaust that the anthracite burning of interpolation catalyzer is produced has reduced 54.5%;
3, bigger energy-conservation effect of coal saving is arranged: four tons of raw coal that we will add proper catalyst and an amount of waste liquid (in above ratio) burns to move in four tons boiler and reach 12.5 hours, contrast as follows with the burning running condition of the raw coal that does not add catalyzer:
(1) will move 12.5 hours equally, the thickness in coal seam is in burner hearth: the former 8.5cm, latter 11cm;
(2) furnace temperature: the former 1100～1110 ℃, 1050～1060 ℃ of the latter;
(3) boiler chain tape running speed: the former is in the operation of " at a slow speed " shelves, and the latter is in the operation of " fast " shelves;
4, the present invention can make the liquid and waste slag produced disposable siliceous fertilizer that becomes, and its effective silicon is up to more than 30%.
From above analysis as seen, the present invention is better than the preparation method of the domestic and international various siliceous fertilizers of being reported so far greatly.And it has bigger economic benefit and remarkable social benefit, and the wide industrial application prospect is arranged.
We enumerate about exemplary embodiments of the present invention at last:
Embodiment 1. gets raw coal 10 gram, adds paper mill black liquor 8 grams, adds after catalyzer 0.5 gram mixes again, and burning is one hour in 1000 ℃ muffle furnace, after cooling it is ground carefully, sieve then, 80 purpose fine powders.Analyze through routine: effective silicon 31.5%, effective calcium 23.5%, moisture content＜3%, fineness 80 orders.Here it is calcium silicate fertilizer of the present invention.
Embodiment 2. gets calcium silicate fertilizer 8 grams of embodiment 1 gained, adds through chemically treated phosphatic rock 2 grams such as acid, and intermingling grinds thin and sieves.Analyze through routine: effective silicon 25.6%, available phosphorus 5.3%, effective calcium 20.1%, moisture content＜3%, fineness 80 orders.Here it is silico-calcium phosphate fertilizer of the present invention.
Embodiment 3. carries out industrial pilot scale in certain factory, get four tons in raw coal (brown coal are 3: 1 with the ratio of anthracite), add about 2 tons of paper mill black liquor, add the catalyzer 120 kg again, after mixing, in four tons of industrial chain-belt type boilers, burn the boiler operatiopn condition: 1100 ℃ of fire box temperatures, thickness of coal seam is 8.5 centimeters, and the chain tape running speed is at " shelves at a slow speed ".Move 12.5 hours altogether, about 1.5 tons of output siliceous fertilizer.At any time four analytical resultss of taking a sample are as follows:
No. 1 sample: effective silicon SlO
2=25.8%
No. 2 samples: effective silicon SlO
2=29.0%
No. 3 samples: effective silicon SlO
2=30.8%, effective calcium CaO=20.5%
No. 4 samples: effective silicon SlO
2=26.8%, effective calcium CaO=19.7%
Average effective silicon SlO
2=28.1%
Reach about 120 orders moisture content＜3% through grinding, fineness.
Claims (3)
1, a kind of preparation method of calcium silicate fertilizer is characterized in that: this preparation method is realized by the following step:
(1) industrial effluent (as the black liquor in paper mill, printing and dyeing mill's waste liquid, factory's bleaching waste liquor or the like), coal and catalyzer are mixed by following part by weight:
Coal: waste liquid=1: 0.1～1
Waste liquid: catalyzer=1: 0.005～0.5
(2) (1) step gained mixture is burnt under 800～1200 ℃ or be directly used in combustion of industrial boiler, for the industry use;
(3) slag after the burning of (2) step is ground carefully, sieves, can obtain effective silicon more than 30%, effectively calcium is at the calcium silicate fertilizer more than 20%.
2, the preparation method of calcium silicate fertilizer as claimed in claim 1 is characterized in that: employed catalyzer comprises CaF
2, CaCO
3, unslaked lime, small amounts of silicate, nitrate, iron cpd, manganic compound or the like.
3, a kind of preparation method of silico-calcium phosphate fertilizer is characterized in that: with the described calcium silicate fertilizer of claim 1 with grind through chemically treated apatites mixed such as acid, sieving to make silico-calcium phosphate fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94106111A CN1113901A (en) | 1994-05-24 | 1994-05-24 | Preparing method for calcium silicate fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94106111A CN1113901A (en) | 1994-05-24 | 1994-05-24 | Preparing method for calcium silicate fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1113901A true CN1113901A (en) | 1995-12-27 |
Family
ID=5032397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94106111A Pending CN1113901A (en) | 1994-05-24 | 1994-05-24 | Preparing method for calcium silicate fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1113901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005080875A1 (en) * | 2004-01-15 | 2005-09-01 | Shenyang David International Machinery & Electric Equipment Co., Ltd. | Circulating fluidized bed burning method for waste liquor of paper making, hide manufacture, printing and dyeing |
| CN110938474A (en) * | 2019-12-17 | 2020-03-31 | 新奥科技发展有限公司 | Method for loading papermaking black liquor on coal sample, fluidized bed furnace and system |
-
1994
- 1994-05-24 CN CN94106111A patent/CN1113901A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005080875A1 (en) * | 2004-01-15 | 2005-09-01 | Shenyang David International Machinery & Electric Equipment Co., Ltd. | Circulating fluidized bed burning method for waste liquor of paper making, hide manufacture, printing and dyeing |
| CN110938474A (en) * | 2019-12-17 | 2020-03-31 | 新奥科技发展有限公司 | Method for loading papermaking black liquor on coal sample, fluidized bed furnace and system |
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| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |