Slow-release phosphate fertilizer regenerated from phosphorus-containing waste residue
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A phosphorus waste residue and slow-release technology, which is applied in fertilization equipment, fertilizer mixtures, applications, etc., can solve the problems of expensive and increased cost of mixed phosphate fertilizers, achieve low raw material costs, benefit environmental protection, and reduce soil compaction.
Inactive Publication Date: 2013-03-20
何明生
View PDF4 Cites 3 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] Isobutylidene diurea is an expensive chemical. For every ton of fertilizer produced, 0.03KG of isobutylidene diurea is used, which increases the cost of the mixed phosphate fertilizer produced by this patented technology by 150 yuan per ton.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] A regenerated slow-release phosphate fertilizer containing phosphorus waste residue, the weight ratio of raw materials: phosphate rock tailings sand 6, phosphoric acid slag 2,
[0026] The phosphate rock tailings sand contains 15%-20% by weight of phosphorus, and the phosphoric acid slag contains 5%-8% by weight of phosphorus, and is dried at 400°C for 5-6 minutes to make the water content ≤ 14%; mixing, crushing, Sieve to 80 meshes, test, pack and store.
Embodiment 2
[0028] A regenerated slow-release phosphate fertilizer containing phosphorus waste residue, the weight ratio of raw materials: phosphate rock tailings sand 7, phosphoric acid slag 3,
[0029] The phosphate rock tailings sand contains 20%-28% by weight of phosphorus, and the phosphoric acid slag contains 5%-10% by weight of phosphorus, and is dried and exposed to the sun for 2 to 3 days to make the water content ≤ 14%; mix, Crushed, sieved to 80 mesh, tested, packaged, put into storage
Embodiment 3
[0031] A regenerated slow-release phosphate fertilizer containing phosphorus waste residue, the weight ratio of raw materials: phosphate rock tailings sand 8, phosphoric acid slag 3.5,
[0032] The phosphate rock tailings sand contains 20% by weight of phosphorus, and the phosphoric acid slag contains 10%-12% by weight of phosphorus, and is dried in the sun for 2 to 3 days to make the water content ≤ 14%; mixing, crushing, and sieving Divided into 80 meshes, testing, packaging, storage. library.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to a slow-release phosphate fertilizer regenerated from phosphorus-containing waste residue, which realizes the purposes of slowing the release of phosphate fertilizer and prolonging the fertilizer efficiency period. The slow-release phosphate fertilizer is formed by drying, mixing and crushing 6-8 parts of phosphate ore tailing sand by weight, 2-4 parts of phosphate residue by weight, and 0.5-1 part of phosphorus mud residue by weight. The slow-release phosphate fertilizer regenerated from phosphorus-containing waste residue disclosed by the invention effectively utilizes phosphorus industrial waste residue, as well as is low in raw material cost, slow to release available phosphorus, long and stable in fertilizer efficiency period, low in application amount, and capable of effectively reducing soil hardening, thus effectively utilizing the phosphorus industrial waste residue and preventing excessive phosphorus which cannot be absorbed by plants in the phosphate fertilizer from being washed away with rainwater to pollute the water source of brooks, and then being beneficial to environmental protection.
Description
[0001] The invention belongs to the chemical fertilizer formulation technology, in particular to the long-acting phosphate fertilizer formulation technology capable of slowly releasing effective phosphorus nutrients in soil. Background technique [0002] Phosphate fertilizer is a popular chemical fertilizer, mainly quick-acting phosphate fertilizer, and the raw material comes from phosphate rock. Quick-acting phosphate fertilizers cannot be absorbed by plants in a short period of time in the soil, and flow into river ditches with rainwater, polluting water sources. Due to the frequent application, it is easy to cause soil compaction, and the economic cost also increases due to the large amount of use. [0003] Chinese patent ZL2005100486491 discloses a long-acting mixed phosphate fertilizer, which is 20%-30% by weight of phosphogypsum, 10%-20% of calcium-magnesium blast furnace waste, and the balance is secondary phosphate rock powder, sprinkled with 0.003% sub- Isobutyl diure...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more