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Iron ore tailing mineral fertilizer

A technology of iron ore tailings and mineral fertilizers, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as crop quality impact, crop absorption, and soil secondary pollution

Inactive Publication Date: 2011-05-11
吴才来
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some research units and researchers have begun to develop some mineral fertilizers, but these mineral fertilizers require high-temperature treatment above 1200°C during processing, which consumes a lot of energy; at the same time, a large amount of chemical raw materials such as caustic soda, sulfuric acid, etc. are required to produce fertilizers. Useful components such as potassium and phosphorus are extracted from natural rocks, but some chemical substances are inevitably left in the mineral fertilizers produced in this way, which are easily absorbed by crops, resulting in a certain impact on the quality of crops
There are also some units that use garbage and scrap steel slag to make fertilizer, but it is easy to cause secondary pollution to the soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Preparation of 1000kg iron ore tailings mineral fertilizer:

[0055] Step 1: The iron ore tailings, phosphorus-containing siltstone, potassium-rich shale and dolomite are respectively pulverized and ground into powder with a pulverizer, passed through a 200-mesh sieve, and the part larger than 200 mesh is removed, and the powder less than or equal to 200 mesh is retained. Obtain iron ore tailings powder, phosphorus-containing siltstone powder, potassium-rich shale powder and dolomite powder for subsequent use;

[0056] Step 2: Weigh the iron ore tailings powder, phosphorus-containing siltstone powder, potassium-rich shale powder and dolomite powder respectively by weight of the components in step 1. Iron ore tailings powder 450kg, phosphorus-containing siltstone powder 270kg, 170kg of potassium-rich shale powder, and 70kg of dolomite powder were placed in a mixer and mixed evenly, and 15kg of sodium carbonate and 25kg of tap water were added to the mixed powder, and the...

Embodiment 2

[0059] Preparation of 1000kg iron ore tailings mineral fertilizer:

[0060] Step 1: The iron ore tailings, phosphorus-containing siltstone, potassium-rich shale and dolomite are respectively pulverized and ground into powder with a pulverizer, passed through a 200-mesh sieve, and the part larger than 200 mesh is removed, and the powder less than or equal to 200 mesh is retained. Obtain iron ore tailings powder, phosphorus-containing siltstone powder, potassium-rich shale powder and dolomite powder for subsequent use;

[0061] Step 2: Weigh the iron ore tailings powder, phosphorus-containing siltstone powder, potassium-rich shale powder and dolomite powder in step 1 by weight of the components respectively. Iron ore tailings powder 500kg, phosphorous siltstone powder 260kg, 160kg of potassium-rich shale powder, and 50kg of dolomite powder are placed in a mixer and mixed evenly, and 10kg of sodium carbonate and 20kg of tap water are added to the evenly mixed powder, then mixed e...

Embodiment 3

[0064] Preparation of 1000kg iron ore tailings mineral fertilizer:

[0065] Step 1: The iron ore tailings, phosphorus-containing siltstone, potassium-rich shale and dolomite are respectively pulverized and ground into powder with a pulverizer, passed through a 200-mesh sieve, and the part larger than 200 mesh is removed, and the powder less than or equal to 200 mesh is retained. Obtain iron ore tailings powder, phosphorus-containing siltstone powder, potassium-rich shale powder and dolomite powder for subsequent use;

[0066] Step 2: Weigh the iron ore tailings powder, phosphorus-containing siltstone powder, potassium-rich shale powder and dolomite powder in step 1 by weight of the components respectively. 280kg, 190kg of potassium-rich shale powder, and 80kg of dolomite powder were placed in a mixer and mixed evenly, and 20kg of sodium carbonate and 30kg of tap water were added to the evenly mixed powder, then mixed evenly, placed in a rotary kiln, and heated at a temperature...

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Abstract

The invention relates to iron ore tailing mineral fertilizer, which comprises the following components in percentage by weight: 40 to 50 percent of iron ore tailing powder of which the granules are less than or equal to 200 meshes, 26 to 28 percent of phosphorus-containing aleuvite powder of which the granules are less than or equal to 200 meshes, 16 to 19 percent of potassium-enriched shale powder of which the granules are less than or equal to 200 meshes, 5 to 8 percent of dolomite powder of which the granules are less than or equal to 200 meshes, 1 to 2 percent of sodium carbonate and 2 to3 percent of tap water. A preparation method of the iron ore tailing mineral fertilizer comprises the following steps of: mixing the components in a stirrer uniformly, adding the sodium carbonate andthe tap water into the uniformly-mixed powder, mixing uniformly, and baking in a rotary furnace; quenching by the tap water immediately; crushing and grinding the quenched product, and sieving with a200-mesh sieve; forming particulate matters in a pelletizer, drying by a dryer, cooling and packaging to prepare the iron ore tailing mineral fertilizer. The iron ore tailing mineral fertilizer promotes the increase production of crops, improves the quality of the crops, improves a soil structure and ensures that the crops can be eaten safely.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, specifically an iron ore containing various elements such as silicon, phosphorus, potassium, calcium, magnesium, etc., which can increase crop production, improve crop quality, improve soil structure, and ensure crop safety. Tailings mineral fertilizer. Background technique [0002] Steel is known as the food of industry, and iron ore is the basic raw material for steelmaking. However, the tailings produced by the massive mining of iron ore have put enormous pressure on the ecological environment and even caused huge damage. Therefore, making full use of iron ore tailings and turning waste into treasure has great scientific significance and social benefits for protecting the environment, improving the level of comprehensive utilization of minerals, and improving economic benefits. Iron ore tailings are also a kind of mineral resources, which can be processed and utilized throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05D9/02
Inventor 吴才来柴延森王志良林冬梅
Owner 吴才来
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