Production technology for processing graphite tailing solid waste into organic nutrient soil

Abstract

The invention relates to a production technology for processing graphite tailing solid waste into organic nutrient soil, and belongs to the technical field of organic nutrient soil processing. The graphite tailing solid waste is processed into the organic nutrient soil through a physical method, the process is simple, the cost is low, implementation and popularization are convenient, secondary pollution is avoided, compared with the prior art, great improvement is achieved, and meanwhile the organic nutrient soil obtained through the method is rich in nutrition, meets various national indexes and is suitable for industrial production. And a new way is provided for effective utilization of the graphite tailing solid waste.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of organic nutrient soil processing, and particularly relates to a production technology for processing graphite tailings solid waste into organic nutrient soil. BACKGROUND

[0002] Graphite tailings refer to solid waste remaining after beneficiation and purification processes in the processing of graphite ore. The main component of these tailings is soil, usually containing a certain proportion of graphite, and other mineral components such as silicates and aluminates, which are by-products in the process of graphite mining and processing.

[0003] In the existing graphite tailings solid waste treatment scheme, it is mainly used in the construction field to process cement and concrete through crushing and grinding processes, but the amount is very small. In addition, there is also a technical scheme for processing graphite tailings solid waste into organic nutrient soil. However, the existing technology generally uses chemical methods for processing, which has high cost and produces secondary pollution, and is not worth the loss. SUMMARY

[0004] The purpose of the present application is to provide a production technology for processing graphite tailings solid waste into organic nutrient soil by physical method, which can effectively utilize the graphite tailings solid waste.

[0005] To achieve the above purpose, the present application provides the following technical scheme: A production technology for processing graphite tailings solid waste into organic nutrient soil, comprising the following steps: S1, taking 5-7 parts of graphite tailings solid waste and 2-4 parts of nutrient components by volume fraction, using drying equipment to dehydrate the graphite tailings solid waste to obtain dehydrated slag.

[0006] S2, mixing the dehydrated slag and nutrient components and then mechanically stirring them by a stirrer to obtain the finished organic nutrient soil.

[0007] S3, packaging the finished organic nutrient soil.

[0008] Further, the nutrient components include crushed straw, waste mushroom residue and poultry manure.

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[0010] The above description is only a summary of the technical scheme of the present application. In order to make the technical means of the present application clearer and to enable the present application to be implemented according to the content of the description, the preferred embodiments of the present application are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A process flow chart of a production technology for processing graphite tailings solid waste into organic nutrient soil is shown in an embodiment of the present application. DETAILED DESCRIPTION

[0012] The technical scheme of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0013] The reagents or equipment used in the embodiments are not specified by the manufacturer, and are all regular products that can be commercially available through regular channels In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. EMBODIMENT

[0014] A production technology for processing graphite tailings solid waste into organic nutrient soil includes the following steps: S1, 7 parts of graphite tailings solid waste and 3 parts of straw are taken by volume fraction, and a drying device is used to dehydrate the graphite tailings solid waste to obtain dehydrated slag.

[0015] S2, the straw is crushed by a crusher to obtain crushed straw.

[0016] S3, the dehydrated slag and the crushed straw are mixed and then mechanically stirred by a stirrer, and the organic nutrient soil product is obtained after the stirring is completed.

[0017] S4, the organic nutrient soil product is bagged and packaged.

[0018] Further, in other embodiments, the crushed straw can be replaced by waste mushroom residue. EMBODIMENT

[0019] A production technology for processing graphite tailings solid waste into organic nutrient soil includes the following steps: S1, 7 parts of graphite tailings solid waste and 3 parts of straw are taken by volume fraction, and a drying device is used to dehydrate the graphite tailings solid waste to obtain dehydrated slag.

[0020] S2, the straw is crushed by a crusher to obtain crushed straw.

[0021] S3, the dehydrated slag, the crushed straw and the livestock manure are mixed and then mechanically stirred by a stirrer to obtain the organic nutrient soil product.

[0022] S4, the organic nutrient soil product is packed.

[0023] Further, in other embodiments, the crushed straw can be replaced by waste mushroom residue.

[0024] The main component of the graphite tailings solid waste is soil, and the organic matter content is high, and the organic nutrient soil obtained by adding crushed straw, waste mushroom residue or livestock manure without pollution of pesticides and fertilizers has an organic matter content of more than 20%. The specific parameters of the nutrient soil are as follows: The mass fraction of total nutrients (N+P2O5+K2O) (on a dried basis) is ≥4.0; The mass fraction of water (fresh sample) is ≤30; The pH value is 5.5-8.5; The seed germination rate (G1) is ≥70; The mechanical impurity fraction is ≤0.5; The total arsenic (As) (on a dried basis) is ≤50 mg / kg; The total mercury (Hg) (on a dried basis) is ≤2 mg / kg; The total lead (Pb) (on a dried basis) is ≤50 mg / kg; The total chromium (Cr) (on a dried basis) is ≤150 mg / kg; The total cadmium (Cd) (on a dried basis) is ≤3 mg / kg; The roundworm egg mortality rate is ≥95; The fecal coliform group number is ≤100 per g.

[0025] The graphite tailings solid waste is processed into organic nutrient soil by a physical method, and the process is simple and easy to implement and promote, effectively solving the secondary pollution caused by the existing method, and greatly improving compared with the prior art.

[0026] In addition, through experiments of Heilongjiang Basket Ice Circulation Technology Co., Ltd. and tests of Heilongjiang Huachu Test Institute, the various indexes of the organic nutrient soil obtained by the production technology shown in the present application completely meet the planting indexes of the organic nutrient soil, and a broad market space is opened up for comprehensive utilization of graphite tailings solid waste.

[0027] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0028] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A production technology for processing graphite tailings solid waste into organic nutrient soil, characterized in that, Includes the following steps: S1. Take 5-7 parts by volume of graphite tailings solid waste and 2-4 parts by volume of nutrient components, and use a drying device to dehydrate the graphite tailings solid waste to obtain dehydrated slag. S2. After mixing the dehydrated slag and nutrient components, mechanically stir them using a mixer. After stirring, the finished organic nutrient soil is obtained. S3. Pack the finished organic nutrient soil into bags.

2. The production technology for processing graphite tailings solid waste into organic nutrient soil as described in claim 1, characterized in that, The nutrient components include crushed straw, waste mushroom residue, and poultry and livestock manure.

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