A plant substrate produced by reverse flotation phosphorus tailings and its preparation method

A planting base material and phosphorus tailings technology, applied in the direction of phosphate fertilizer, application, fertilizer mixture, etc., can solve the problems of easy loss, no phosphorus tailings to prepare planting base material, etc., to achieve cost saving, low cost, and conducive to plant growth Effect
CN104109050BInactive Publication Date: 2016-06-22WUHAN INSTITUTE OF TECHNOLOGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a plant growing medium produced by using reverse flotation phosphate tailing, which is used on a rock slope and comprises active phosphate tailing, soil and water, wherein active phosphate tailing is calcinined by reverse flotation phosphate tailing, the mass ratio of the active phosphate tailing to soil is 1:3-3:1, water mass accounts for 20-25% of total amount of active phosphate tailing and soil, the active phosphate tailing, soil and water are uniformly stirred and aged, and then are injected on the rock slope to obtain the plant growing medium. According to the invention, calcining is carried out so that phase composition of the reverse flotation phosphate tailing is changed; hydrated silicate composed of magnesium and calcium, which is more difficult than that of apatite, so that P2O5 in hydrated silicate can be directly absorbed by plant. The processed phosphate tailing is mixed with soil to obtain the plant growing medium. The plant growing medium can fully use the phosphate tailing, and has wide application prospect in mine reclamation and local agriculture production.
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Description

technical field

[0001] The invention belongs to the technical field of comprehensive utilization of tailings, and relates to a vegetable substrate produced by reverse flotation phosphorus tailings and a preparation method thereof. Background technique

[0002] Phosphate rock is an important chemical mineral raw material. In order to meet the quality requirements of wet-process phosphoric acid for raw material ores, at present, my country mainly obtains phosphorous concentrate suitable for phosphoric acid production through various beneficiation technologies such as phosphate rock reverse flotation process. Reverse flotation phosphate ore tailings are industrial waste residues left after phosphorus is enriched by reverse flotation process. Its main mineral composition is: dolomite, apatite and quartz minerals in the form of collophosite. Usually every ton of phosphorous concentrate is produced, 0.44 tons of tailings are produced, and about 7 million tons of phosphorous taili...

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
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