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Packaging bag and method for preventing agglomeration of powder

A technology for packaging bags and powders, applied in the field of powder preparation and storage, can solve problems such as lack of general applicability, introduction of foreign bodies, and reduction of product purity, and achieve the effect of preventing agglomeration, wide application and solving agglomeration problems.

Inactive Publication Date: 2017-05-10
TIANQI LITHIUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the methods for preventing powder agglomeration in the prior art have more or less risks of introducing foreign matter and reducing product purity, and none of them have universal applicability

Method used

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  • Packaging bag and method for preventing agglomeration of powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The size of the packaging bag is 800mm*550mm, the inner packaging bag is made of imported crepe paper, and the outer packaging bag is made of polyethylene terephthalate. The top of the inner packaging bag is 2cm lower than the top of the outer packaging bag, and the 5cm width section at the top of the inner packaging bag is combined with the outer packaging bag to form a fixed composite section.

[0037] In the inner layer packaging bag of packaging bag, the micropowder grade lithium carbonate product of packing into 20Kg, the D50 of lithium carbonate product is 6.7 μ m, keeps the air volume under the natural state in the bag, carries out the heat of 1.8cm on the top of outer layer packaging bag Seal to form a heat-sealing segment to obtain a packaged product.

[0038] Stack the packaged products, 1 ton / pallet, one pallet. One month later, all the packaging bags containing the product were well sealed and undamaged, and no agglomeration was found in the product after o...

Embodiment 2

[0040] The packaging bag with a specification of 800mm*550mm, the inner packaging bag is made of lithographic ES non-woven fabric, and the outer packaging bag is made of high-density polyethylene. The top of the inner packaging bag is 10cm lower than the top of the outer packaging bag, and the 18cm width section at the top of the inner packaging bag is combined with the outer packaging bag to form a fixed composite section.

[0041] Pack 20Kg of micronized lithium carbonate product into the inner packaging bag of the packaging bag, the D50 of the lithium carbonate product is 7.6 μm, keep the air volume in the natural state in the bag, and heat seal the top of the outer packaging bag with 4cm A heat-sealed section is formed to obtain a packaged product.

[0042] Stack the packaged products, 1 ton / pallet, stacking two pallets. After 6 months, all the packaging bags containing the product were well sealed and undamaged, and no agglomeration was found in the product after opening...

Embodiment 3

[0044] The size of the packaging bag is 800mm*550mm, the inner packaging bag is made of domestic raw pulp paper, and the outer packaging bag is made of aluminum-plastic film. The top of the inner packaging bag is 20cm lower than the top of the outer packaging bag, and the 25cm width section at the top of the inner packaging bag is combined with the outer packaging bag to form a fixed composite section.

[0045] Pack 20Kg of micronized lithium carbonate product into the inner packaging bag of the packaging bag, the D50 of the lithium carbonate product is 9.3 μm, keep the air volume in the natural state in the bag, and heat seal the top of the outer packaging bag with 10cm A heat-sealed section is formed to obtain a packaged product.

[0046] Stack the packaged products, 1 ton / pallet, three pallets. After 12 months, all the packaging bags containing the product were well sealed and undamaged, and no agglomeration was found in the product after opening the package.

[0047] In ...

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Abstract

The invention discloses a packing bag and method for preventing agglomeration of powder. The packaging bag is composed of an inner-layer packaging bag body and an outer-layer packaging bag body, the inner-layer packaging bag body is used for packaging the powder, the outer-layer packaging bag is sleeved with the inner-layer packaging bag, the top of the inner-layer packaging bag body is lower than that of the outer-layer packaging bag and compounded with the outer-layer packaging bag to form a compound section, and the top of the outer-layer packaging bag includes a heat-sealing section formed after the power is loaded, wherein the inner-layer packaging bag body is made of breathable water-absorbing materials and the outer-layer packaging bag body is made of plastic films or sheets. The packing bag and method for preventing agglomeration of the powder have the advantages that no foreign matter introduction risk exists and the product purity is not reduced, agglomeration of powder products can be well prevented, the agglomeration problems of the powder products in the long-term stress state can be especially solved, the packing bag and method have universal applicability and can be widely used in the transportation and storage of lithium carbonate and other powder products.

Description

technical field [0001] The invention belongs to the technical field of powder preparation and storage, and more specifically relates to a packaging bag and method for preventing powder agglomeration. Background technique [0002] The problem of agglomeration has always been a major problem in the powder industry. A series of solutions have been proposed in the industry to solve this problem. The main directions are divided into two categories: desiccant method and anti-caking agent method. [0003] Patent CN 103783288 A discloses a method for preventing the agglomeration of feed-grade threonine crystals. The purpose of preventing the agglomeration of feed-grade threonine crystals is achieved by adding feed-grade white carbon black and feed-grade stearate. The method The amount of anti-caking agent added is small, the cost is low, and it is easy to use, but it will affect the purity of the product, introduce foreign matter, and the application range is narrow, and it is suita...

Claims

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Application Information

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IPC IPC(8): B65D30/08
CPCB65D29/02
Inventor 曹乃珍姚丽徐川高洁陈欣李仕红
Owner TIANQI LITHIUM CORP
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