CN1059189C

CN1059189C - Si-Ca-P-K fertilizer

Info

Publication number: CN1059189C
Application number: CN97107395A
Authority: CN
Inventors: 陈德荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-13
Filing date: 1997-03-13
Publication date: 2000-12-06
Anticipated expiration: 2017-03-13
Also published as: CN1168363A

Abstract

The present invention relates to a Si-Ca-P-K fertilizer which is prepared from raw materials of lower grade phosphorus ore, peat, a lime material, silica sand and kiln dust by a certain proportion. In a production method for Si-Ca-P-K fertilizer, a finished product is produced through the procedures of material compounding, high temperature calcination, mixing, porphyrization, etc. For the Si-Ca-P-K fertilizer, industrial waste lower grade phosphorus ore, silica sand and kiln dust are fully utilized as raw materials to produce a multielement fertilizer, the Si-Ca-P-K fertilizer has the advantages of environment improvement, resource saving, low cost, little investment, predominant fertilizer effect, etc., and is suitable for application to crops planted on neutral and alkalescent sand and unfertile silicon and potassium lacking soil.

Description

A kind of Si-Ca-P-K fertilizer and production method thereof

The present invention relates to a kind of Si-Ca-P-K fertilizer of farm crop fertilizer.Its plantation farm crop that mainly suit on the inclined to one side alkali of neutrality, sand, sticking thin scarce silicon, potassium deficiency soil is used.

According to the knowledge of the applicant, still there is not Si-Ca-P-K fertilizer at present.Agricultural fertilizer to effective nutrient such as calcic, magnesium, phosphorus, mainly be based on fused(calcium magnesium)phosphate, and need to adopt phosphorous high-grade Rock Phosphate (72Min BPL) more than 26% in the production process of fused(calcium magnesium)phosphate, under the katalysis of serpentine after the high-temperature calcination more than 1250 ℃ again through shrend, oven dry, levigate making.Its production cost height, facility investment expense are big, low-grade phosphate ore stones a large amount of after the ore dressing go out of use, not only influence environment of plant health, and the silicon that contains of ore is difficult to change into effective silicon in process of production, and therefore this fused(calcium magnesium)phosphate can not satisfy the serious farm crop needs that lack on the tripoli earth.Also occurred much containing silicon fertilizer in recent years on the market, but its raw materials for production mostly are yellow phosphorus ore deposit quarrel, raw material sources is restricted, is difficult to form suitability for industrialized production, so production cost is very high.And some can be used for the silicon-containing material of fertilizer, but is taken as refuse and abandons and put.For example: the silica sand after afterheat in casting is handled in the high temperature of sulfur-bearing (400-900 ℃) gas not, contain 75% soluble silica, now but be taken as waste treatment, and the car of whenever putting upside down, producer's (as Deyang Dongfan Steam Turbine Factory) must pay 200 yuan of fine to local environmental administration.In addition, cement in vertical kiln is being mingled with fine particle kiln ash in the flue gas of being discharged in the process of calcination of chamotte, contains the potassium oxide of some amount in this fine grain kiln ash, can be used as fertilizer and uses.Yet many shaft kiln cement plants not only utilize the kiln ash, it is used as refuse outwells, and influenced environmental health.

Purpose of the present invention is intended to overcome the shortcoming that above-mentioned prior art exists, the applicant is from being the satisfied growth needs that lacks farm crop on silicon, the potassium deficiency soil, utilize factories and miness depleted low-grade phosphate ore stone and silica sand, kiln ash, improve environmental pollution, raising has successfully been developed a kind of Si-Ca-P-K fertilizer to the utilization of waste and old resource.

The objective of the invention is to realize in the following way: this Si-Ca-P-K fertilizer is to count 38-48%, P with the raw material gross weight ₂O ₅Content is lower than the lime material of mud coal, 5-15% of 26% Rock Phosphate (72Min BPL), 12-16%, and silica sand, the kiln that the 10-15% cement in vertical kiln reclaims of 30-90 minute product of calcining and 15-20% is grey down mixes resulting product at temperature 400-1000 ℃.

To be silicon ore in the gas of sulfur-bearing not at the cast steel waste heat handle down for 400-900 ℃ described silica sand makes.

Described silica sand is that silicon ore is calcined in 400-900 ℃ of High Temperature Furnaces Heating Apparatus and made.

Production method of the present invention: will count 38-48%, P with the raw material gross weight ₂O ₅Content is lower than the lime material of mud coal, 5-15% of 26% Rock Phosphate (72Min BPL), 12-16% temperature 400-1000 ℃ of calcining 30-90 minute down, resulting calcinate mixes with the kiln ash that 15-20% silicon ore deposit, 10-15% cement in vertical kiln reclaim again, obtains described product.

The product of the present invention that adopts above technical scheme to produce, its outward appearance is canescence, grey black and the little yellow powdery that loosens, have nonhygroscopic, the characteristics such as do not lump of nontoxic, odorless, no burn into, soluble silicon content surpasses select quality standard in China's fused(calcium magnesium)phosphate standard laid down by the ministries or commissions of the Central Government, and it is a kind of multielement chemical fertilizer.The present invention builds peace corporatization factory through silico-calcium phosphate fertilizer plant of Dongfan Steam Turbine Factory industrial and eastern vapour and executes reality, and its product reaches the Q/20525673--902--1995 company standard through check.

The present invention is owing to utilize in the industry and mining depleted low-grade phosphate ore stone and silica sand, kiln ash to make raw material, produce a kind of Si-Ca-P-K fertilizer that is rich in nutrients such as effective silicon-dioxide and calcium, magnesium, phosphorus, potassium, therefore have improve environment, economize on resources, production cost low (only for fused(calcium magnesium)phosphate 1/2) and the simple advantage of equipment.This product is mainly used in neutral alkali partially, sand, sticking thin scarce silicon, potassium deficiency soil, is applicable to the base fertilizer of crops such as doing paddy rice, wheat, corn, rape, beans, vegetables and topdresses.Ton surplus having sold 20,000 on Sichuan, Henan, Shandong, Shanxi and other places between this fertilizer trial production period.Use (seeing attached list one) and reflection according to the user for the consumption of Different Crop, this fertilizer has following unusual effect to farm crop: 1, improve the farm crop photosynthetic productivity, improve rice strain economic characters, make rice shoot return the spring early, blade is not sagging, blade is generous, the upright thick shape of bar, and withered and yellow leaf reduces.2, improve farm crop root system oxidation susceptibility, alleviate the aluminum ion harm of alkali poison rice field, promote root system development, make the rice shoot early growth and quick tiller, increase and tiller, prevent rice strain early ageing.3, promote that carbohydrate is synthetic in the farming object, the big grain of fringe weight, full grains, ghost rate descend, and increase grain and heavily reach output.4, help regulating the silicon nitrogenize, strengthen the plant lodging tolerance.5, after silicon is inhaled in the rice strain, accumulate, form layer of silica gel (buffy coat) and strengthen diseases and insect pests resistance at blade, blade tip, rhizome cells of superficial layer.6, the phosphorus in the energy activating soil, nitrogen etc., the utilization ratio of raising nitrogen phosphorus fertilizer.7, can improve absorption and the utilization of plant, make it to be converted into soon protein nitrogen.8, can strengthen the resistance (as to arid, low temperature, saline and alkaline, disease and pest and lodging etc.) of farm crop.Effect can be increased production 3.69--18% to scarce silicon potassium deficiency soil application product of the present invention, different crops in sum.

The invention will be further described below in conjunction with embodiment:

Embodiment one: raw material is got low-grade phosphate ore stone 5000Kg, mud coal 1800Kg, lime material 1500Kg, silica sand 2300kg (silica sand after handling in the 400--900 ℃ of high-temperature gas of cast steel waste heat at sulfur-bearing not), kiln ash 1400kg (the kiln ash that cement in vertical kiln reclaims).

Product processes: finish through batching, high-temperature calcination, mixing, levigate, check, packing several steps.The operation of its each step is: 1, batching is to get the raw materials ready by the weight of above-mentioned raw materials; 2, will prepare burden good Rock Phosphate (72Min BPL), mud coal, lime material thorough mixing is even, is that ground kiln about 500 ℃ was calcined 60--88 minute in temperature; 3, silica sand, kiln ash uniform mixing that the incinerating material is good with batching again; 4, mixture is inserted in the ball mill levigate pass through 250 μ m sieve just finished product; 5, finished product contains effective P through check ₂O ₅4.09%, solubility S ₁O ₂28.30% (adopting the molten amount method of potassium silicofluoride to measure), the active calcium ion content (CaO) 30.48%, effective K ₂O2.20%, moisture content 0.92%, all the other are the trace element that plant such as sodium magnesium boron zinc-iron steel molybdenum needs, fineness 〉=84.2 orders, accord with Q/20525673--902--1995 specified standards (this product does not now also have national standard and industry standard); 6, pack warehouse-in through the finished product of check with plastics bag and promptly get product of the present invention.

Embodiment two: proportioning raw materials is got low-grade phosphate ore stone 5500kg, mud coal 1700kg, lime material 1700kg, silica sand 2600kg, kiln ash 1600kg.

Product processes: get product through batching, high-temperature calcination, mixing, levigate, check, packing several steps, its batching is to get the raw materials ready by described raw material weight; Be to be that ground kiln about 700 ℃ was calcined 50--75 minute after Rock Phosphate (72Min BPL), mud coal, lime material are mixed in temperature; Other and embodiment are together.Product is through checking effective P ₂O ₅Content 2.60%, solubility SiO ₂30.78%, the active calcium ion content (CaO) 31.70%, effective K ₂O2.27%, moisture content 0.76%, fineness 〉=85 orders.

Embodiment three: raw material is got low-grade phosphate ore stone 6000kg, mud coal 1700kg, lime material 1600kg, silica sand 2600kg, kiln ash 1400kg.

Product processes: finish through batching, high-temperature calcination, mixing, levigate, check, packing several steps.Its batching is to get the raw materials ready by this routine raw material weight; It is that ground kiln about 850 ℃ was calcined 40--65 minute in temperature that Rock Phosphate (72Min BPL), mud coal, lime material mix the back; Other step operation is with embodiment one.This product is through effective P of check ₂O ₅Content 2.72%, solubility SiO ₂30.56%, the active calcium ion content (CaO) 29.86%, effective K ₂O2.10%, moisture content 0.86%, fineness 〉=88 orders.

Embodiment four: proportioning raw materials is got low-grade phosphate ore stone 4000kg, mud coal 1600kg, lime material 1200kg, silica sand 1800kg, kiln ash 1500kg.

Product processes is finished through the above step.Its batching is to get the raw materials ready by this routine composition of raw materials weight; Rock Phosphate (72Min BPL), mud coal, the lime material back that is mixed is that ground kiln about 950 ℃ was calcined 30--55 minute in temperature; Other is still with embodiment one.This product is through checking effective P ₂O ₅Content 3.56%, solubility SiO ₂29.06%, the active calcium ion content (CaO) 28.79%, effective K ₂O 2.42%, moisture content 0.92%, fineness 〉=90 orders.

In above embodiment: silica sand is desirable to be used for silicon ore and to handle down for 400-900 ℃ through the cast steel waste heat at the gas of sulfur-bearing not and make, and also silicon ore can be calcined to make in 400-900 ℃ High Temperature Furnaces Heating Apparatus.

Subordinate list one product consumption reference table of the present invention

The crop title	Amount of application (kg/ mu)	The crop title	Amount of application (kg/ mu)
The crop title	Amount of application (kg/ mu)	The crop title	Amount of application (kg/ mu)	Paddy rice	100--300	Wheat	100--250
Corn	100--250	Rape	200--300	Paddy rice	100--300	Wheat	100--250
Corn	100--250	Rape	200--300	Beans	100--240	Vegetables	80---150

Claims

1, a kind of Si-Ca-P-K fertilizer is characterized in that: this Si-Ca-P-K fertilizer is to count 38-48%, P with the raw material gross weight ₂0 ₅Content is lower than 26% Rock Phosphate (72Min BPL), 12-16% mud coal, 5-15% lime material, and the kiln that reclaims of 30-90 minute product of calcining and 15-20% silica sand, 10-15% cement in vertical kiln is grey down mixes resulting product at temperature 400-1000 ℃.

2, Si-Ca-P-K fertilizer according to claim 1 is characterized in that: to be silicon ore in the gas of sulfur-bearing not at the cast steel waste heat handle down for 400-900 ℃ described silica sand makes.

3, Si-Ca-P-K fertilizer according to claim 1 is characterized in that: described silica sand is that silicon ore is calcined in 400-900 ℃ of High Temperature Furnaces Heating Apparatus and made.

4, a kind of production method of Si-Ca-P-K fertilizer is characterized in that: will count 38-48%, P with the raw material gross weight ₂O ₅Content is lower than 26% Rock Phosphate (72Min BPL), 12-16% mud coal, 5-15% lime material temperature 400-1000 ℃ of calcining 30-90 minute down, resulting calcinate mixes with the kiln ash that 15-20% silica sand, 10-15% cement in vertical kiln reclaim again, obtains described product.