Unlock instant, AI-driven research and patent intelligence for your innovation.

Iron tailings recycling method

A technology of resource utilization and iron tailings, applied in the direction of land preparation, application, agricultural machinery and implements, etc., can solve the problems of straw polluting the environment and achieve the effect of less investment, strong pertinence, and enhanced absorption

Inactive Publication Date: 2018-07-17
CHANGZHOU UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the problems of resource utilization of iron tailings and crop straws and environmental pollution, provide a method for resource utilization of iron tailings with simple operation and low investment, through soil, iron tailings , Soil conditioner, and farmyard manure are mixed together to make tailings soil, and screen the plant species that can over-accumulate heavy metals in tailings soil, strengthen the absorption of heavy metals by plants, and remove heavy metals in tailings soil through plant harvesting , to transform tailings soil into arable soil

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] ① Investigate, measure, and select the work area, arrange the work area plots, and clean up the crop straw, fallen leaves, bricks and stones and other sundries on the soil of the plots.

[0026] ② Strip the surface soil in the work area, and the depth of stripping is 0.5 meters.

[0027] ③Mix the stripped soil with crushed and screened iron tailings, soil improver, and dried human and animal manure after composting in a volume ratio of 4:2:1:1 to make tailings soil. Backfill to original stripped area.

[0028] ④ Interplant different types of plants on the tailings soil, and interplant corn and amaranth at intervals after summer harvest.

[0029] ⑤Experimental analysis determines the heavy metal species with the highest content in the tailings soil, step ④ selects different types of amaranth, and experimentally analyzes the content of heavy metals in the stems and leaves of amaranth, and calculates the content of the most in the tailings soil in each amaranth The avera...

Embodiment 2

[0036] ① Investigate, measure, and select the work area, arrange the work area plots, and clean up the crop straw, fallen leaves, bricks and stones and other sundries on the soil of the plots.

[0037] ②Peel off the surface soil in the work area, and the depth of stripping is 1.0m.

[0038] ③Mix the stripped soil with crushed and screened iron tailings, soil improver, and dried human and animal manure after composting in a volume ratio of 4:2:1:1 to make tailings soil. Backfill to original stripped area.

[0039] ④ Interplant different types of plants on the tailings soil, interplant wheat and spinach at intervals after autumn harvest.

[0040] ⑤ Experimental analysis to determine the top three heavy metal species in the tailings soil, and step ④ to select different types of spinach.

[0041] Experimentally analyze the content of heavy metals in the stems and leaves of spinach, calculate the average content of the heavy metal in the tailings soil of each spinach, arrange in ...

Embodiment 3

[0048] ① Investigate, measure, and select the work area, arrange the work area plots, and clean up the crop straw, fallen leaves, bricks and stones and other sundries on the soil of the plots.

[0049] ② Strip the surface soil in the work area, and the depth of stripping is 1.5 meters.

[0050] ③Mix the stripped soil with crushed and screened iron tailings, soil improver, and dried human and animal manure after composting in a volume ratio of 4:2:1:1 to make tailings soil. Backfill to original stripped area.

[0051] ④ Interplant different types of plants on the tailings soil, interplant wheat and spinach at intervals after autumn harvest.

[0052] ⑤ Experimental analysis to determine the top three heavy metal species in the tailings soil, and step ④ to select different types of spinach.

[0053] Experimentally analyze the sum of the contents of the top three heavy metals in the tailings soil in the stems and leaves of spinach, and calculate the average value of the sum of t...

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

No PUM Login to View More

Abstract

The invention discloses an iron tailings recycling method. Tailings soil is prepared by surveying, measuring and selecting a working region, arranging a land parcel in the working region, clearing soil in the land parcel, stripping surface-layer soil in the working region and uniformly mixing the stripped soil with the smashed and sieved iron tailings, a soil conditioner and composted dried humanand animal excreta according to the volume ratio of 4:2:1:1, and the tailings soil is refilled into an original stripping region; different kinds of plants are interplanted in the tailings soil, wheatand spinaches are interplanted after autumn harvest, and corns and edible amaranths are interplanted after summer harvest; after the wheat or the corns are matured, all the plants in a farmland are harvested, and the tailings soil is modified into cultivated soil by harvesting the plants, so that the problems of treatment of crop straws and disposal of the iron tailings are partially solved.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment and disposal, in particular to a resource utilization method of iron tailings. Background technique [0002] my country is rich in mineral resources, and the annual output of iron ore is huge. Iron tailings are wastes produced by iron ore after multiple screening. The annual discharge of tailings in the country reaches 1 billion tons. Since the current resource utilization of tailings is mainly to recover elements through the re-election process and to reuse them as industrial construction raw materials, the comprehensive utilization rate of tailings is low, resulting in a large amount of tailings stockpiled. A large amount of stockpiling of tailings takes up land, and the country destroys about 1.5 million m2 of land every year due to mining activities 2 , of which the stacking of tailings occupies a land of 900,000 m 2 . [0003] The stockpiling of iron tailings not only causes ...

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
no application Login to View More
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 王莉万玉山
Owner CHANGZHOU UNIV