Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer

A technology of heavy metal and repairing agent, applied in application, potash fertilizer, organic fertilizer and other directions, can solve the problems of many raw materials, high production cost and low economic benefit, and achieve the effects of simple preparation process, low production cost and good adsorption effect.

Active Publication Date: 2017-06-20
福建玛塔生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned method has improved the repairing effect of the conditioner to heavy metal-contaminated soil to a certain extent, the preparation process of the above-mentioned heavy metal repairing agent is very complicated, requires more raw materials, has higher production costs, and has low yield and low economic benefits

Method used

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  • Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer
  • Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer
  • Environment-friendly heavy metal repairing agent, application thereof and slow-releasing heavy metal repairing fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] The preparation method of the slow-release heavy metal repair fertilizer of the embodiment of the present invention includes the following steps:

[0046] Step 2-1: Prepare the main material particles

[0047] At least one of organic fertilizer, potash fertilizer and boron fertilizer is used as raw materials to prepare granules. When carrying out this step, it can be carried out according to the conventional steps for preparing fertilizer granules, or directly purchased on the market.

[0048] Step 2-2: Preparation of auxiliary materials

[0049] Take the humic acid and the binder of the embodiment of the present invention, wherein the humic acid accounts for 30-35% of the total weight of the auxiliary material, and the binder accounts for 15-20% of the total weight of the auxiliary material. The humic acid and the binder are mixed in a mixer according to the aforementioned weight percentage to prepare a slurry for use.

[0050] Step 2-3: Film formation

[0051] In the embodimen...

Example

[0056] Example 1-1

[0057] After pretreatment, the oyster shells are roasted protectively under the conditions of a roasting temperature of 600℃ and a roasting time of 12 minutes. When feeding, the flow rate of the oyster shells is controlled to 0.2m 3 / min, the rotation speed of the roasting equipment is 25r / min. After roasting, the water content in the oyster shell is 10% (weight percent). The oyster shells were subjected to the first cooling treatment and the second cooling treatment respectively, wherein the natural cooling time of the first cooling treatment was 10 min, and the condition of the second cooling treatment was cooling at a temperature drop rate of 15° C. / min for 15 min. Then, the oyster shells are crushed, and oyster shell powders of different particle sizes are selected by winnowing. Then, oyster shell powders of different sizes are prepared into a heavy metal repair agent, which includes a first-grade powder, a second-grade powder, a third-grade powder and a...

Example

[0058] Example 1-2

[0059] After pretreatment, the oyster shells are roasted protectively at a roasting temperature of 650°C and a roasting time of 10 minutes. When feeding, the flow rate of the oyster shells is controlled to 0.3m 3 / min, the rotating speed of the roasting equipment is 30r / min. After roasting, the water content in the oyster shell is 9.5% (weight percent). The oyster shells were subjected to the first cooling treatment and the second cooling treatment respectively, wherein the natural cooling time of the first cooling treatment was 14 min, and the condition of the second cooling treatment was cooling at a temperature drop rate of 17° C. / min for 11 min. Then, the oyster shells are crushed, and oyster shell powders of different particle sizes are selected by winnowing. Then, oyster shell powders of different sizes are prepared into a heavy metal repair agent, which includes first-level powder, second-level powder, third-level powder and fourth-level powder. The ...

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Abstract

The invention provides an environment-friendly heavy metal repairing agent, application thereof and a slow-releasing heavy metal repairing fertilizer and belongs to the technical field of heavy metal pollution soil repairing. The environment-friendly heavy metal repairing agent includes first-level powder, second-level powder, third-level powder and fourth-level powder which are the screened materials respectively sieved with a 200-400 mesh sieve, a 100-150 mesh sieve, a 20-80 mesh sieve and a 10-18 mesh sieve; on the basis of the weight percent, the weight of the first-level powder, the second-level powder, the third-level powder and the fourth-level powder is respectively 15-25%, 10-20%, 55-68% and 5-10% of the total weight of the heavy metal repairing agent; the metal repairing agent is prepared according to the steps of protectively roasting the oyster shell and then grinding; the roasting temperature is at 600-800 DEG C, the roasting time is 8-12min, the flow rate of the oyster shell entering into the roasting device is 0.2-0.4m3/min and the rotating speed of the roasting device is at 25-35r/min. The environment-friendly heavy metal repairing agent can be used for effectively repairing the soil polluted by cadmium and has high pertinence and excellent absorbing effect.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal polluted soil, in particular to an environment-friendly heavy metal remediation agent and its application, and slow-release heavy metal remediation fertilizer. Background technique [0002] The influence of natural conditions and long-term high-intensity cultivation, that is, the large-scale application of quick-acting fertilizers, will lead to soil structure deterioration, nutrient imbalance, and soil fertility decline. At the same time, it will also cause serious soil acidification, thereby affecting the effectiveness of fertilizers. Moreover, various industrial waste water, waste gas, etc. make the pollution of heavy metals (cadmium, chromium, mercury, lead) in the soil more and more serious. Heavy metals such as cadmium, chromium, mercury, and lead affect the normal growth of crops on the one hand, and enter into crops on the other hand, affecting human health. [0003] Oys...

Claims

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Application Information

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IPC IPC(8): C09K17/06C05G3/04C05G3/00C09K101/00C09K109/00C05G3/80
CPCC05D1/00C05D9/02C05G3/00C05G3/80C05G5/30C09K17/06C09K2101/00C09K2109/00C05F3/00C05F11/00
Inventor 王永明
Owner 福建玛塔生态科技有限公司
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