Production method for alginate specialized for welding

An alginate and production method technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of affecting welding quality, difficult to crush, difficult to particle size, etc., so as to reduce working time and avoid sticking to the net. , the effect of suppressing agglomeration

Active Publication Date: 2013-10-23
青岛海之林生物科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the solid-phase neutralization method adopted by most enterprises produces industrial-grade alginate. The content of phosphorus, sulfur and chlorine in the obtained alginate is too high, which will easily affect the welding quality, and it is not easy to be crushed and has a lot of loss. The final particle size is difficult to reach 75μm.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Soak the non-deteriorated dry kelp in 15 times the volume of water (soak 1g of kelp in 15ml of water) at room temperature for 2.5 hours. After washing, add soda ash with 15% of the weight of the dry kelp, and digest it at 60°C for 3 hours. Hydrochloric acid with a percentage concentration of 8% "acidifies" the digested glue to extract alginic acid. The prepared alginic acid is washed twice in a row and then subjected to high-speed centrifugation to remove excess water and squeezed to the content of alginic acid. The water content is 65%, pulverized;

[0022] 2) Weigh 1000kg of alginic acid in a solid-phase neutralizer, stir, add 300kg of sodium hydroxide for neutralization reaction for 40 minutes, and generate alginate;

[0023] 3) After complete neutralization (pH 6.5), wash it once with a compound lotion (formaldehyde: acetone: ethyl acetate in the lotion = 1.5:1:2.5);

[0024] The present invention optimizes the components and proportions of the composite cleanin...

Embodiment 2

[0028] 1) Soak the non-deteriorated dry kelp in 15 times the volume of water (soak 1g of kelp in 15ml of water) at room temperature for 2.5 hours. After washing, add soda ash with 15% of the weight of the dry kelp, and digest it at 60°C for 3 hours. Hydrochloric acid with a percentage concentration of 8% "acidifies" the digested glue to extract alginic acid. The prepared alginic acid is washed twice in a row and then subjected to high-speed centrifugation to remove excess water and squeezed to the content of alginic acid. The water content is 65%, pulverized;

[0029] 2) Weigh 1000kg of alginic acid in a solid-phase neutralizer, stir, add 300kg of sodium hydroxide for neutralization reaction for 40 minutes, and generate alginate;

[0030] 3) After complete neutralization (pH 6.5), wash it once with a compound lotion (formaldehyde: acetone: ethyl acetate in the lotion = 1.2:0.8:2.5);

[0031] 4) Centrifuge the washed alginate, dry it, and crush it with an ultrasonic vibrating ...

Embodiment 3

[0033] 1) Soak the non-deteriorated dry kelp in 15 times the volume of water (soak 1g of kelp in 15ml of water) at room temperature for 2.5 hours. After washing, add soda ash with 15% of the weight of the dry kelp, and digest it at 60°C for 3 hours. Hydrochloric acid with a percentage concentration of 8% "acidifies" the digested glue to extract alginic acid. The prepared alginic acid is washed twice in a row and then subjected to high-speed centrifugation to remove excess water and squeezed to the content of alginic acid. The water content is 65%, pulverized;

[0034] 2) Weigh 1000kg of alginic acid in a solid-phase neutralizer, stir, add 300kg of sodium hydroxide for neutralization reaction for 40 minutes, and generate alginate;

[0035] 3) After complete neutralization (pH 6.5), wash it with a compound lotion (formaldehyde: acetone: ethyl acetate in the lotion = 1.2:1:3);

[0036] 4) Centrifuge the washed alginate, dry it, and crush it with an ultrasonic vibrating sieve to ...

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Abstract

The invention relates to a production method for alginate specialized for welding. In the production method, alginic acid is formed by an acidification method; then a secondary washing process is employed in a washing process after the alginic acid is formed by acidification; and a compound washing liquid is selected to wash again after the alginic acid is conversed into alginate by neutralization in a solid phase. The above improvements can effectively reduce the content of phosphorus, sulfur and chlorine in a finished product of the alginate. Acidification treatment is used to form alginic acid in the preparation method. Compared with a conventional calcification method, the production method provided by the invention omits a decalcification process, shortens a production period, and reduces working time. Besides, compared once washing in the prior art, the secondary washing process is employed after acidification, so that the content of phosphorus, sulfur and chlorine can be effectively reduced. The compound washing liquid is selected to wash the alginate after neutralization in the solid phase, so that the concentrations of inorganic ions such as phosphorus, sulfur and chlorine are reduced and the volume of the obtained alginate expands, thereby facilitating subsequent smashing. The particle size can easily reach below 75 [mu]m when the alginate is smashed, with little loss.

Description

technical field [0001] The invention belongs to the technical field of preparation of industrial welding raw materials, and in particular relates to a production method of alginate specially used for welding. Background technique [0002] The coating of the electrode plays a very important role in the welding process and is an important factor determining the welding quality. Among them, the binder is an important part of the electrode coating, and its performance determines the bonding fastness of the coating on the welding core, and will affect the stability of the welding arc. Alginate is a kind of electrode coating binder with better performance. The electrode coating coating made of alginate is smooth and smooth, has no pores and has a good weave texture. [0003] According to Gan Chunji's narration in the article "Application of Alginate in Electrode", when the chlorine content in alginate exceeds 0.2%, the stability of the arc deteriorates sharply, and the number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04B23K35/40
Inventor 陈宏崔冰刘兴勇时慧李朋
Owner 青岛海之林生物科技开发有限公司
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