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Desulfurization and dephosphorization method of clay for electrode coating

A technology of welding rod and clay, which is applied in the field of desulfurization and dephosphorization of clay for welding rod coating, can solve the problems of reducing sulfur and phosphorus content, and achieve good economic benefits and broad application prospects

Active Publication Date: 2017-10-31
盱眙凹土能源环保材料研发中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a method for desulfurization and dephosphorization aiming at the problem that the existing clay raw ore is used in the coating of electric welding rods with too high sulfur and phosphorus content. At the same time, the content of sulfur and phosphorus is significantly reduced, and the application of clay raw ore in the field of welding materials is broadened

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: Attapulgite and water are added in the container according to the solid-to-liquid ratio of 1g: 5mL, fully stirred at 60°C for 1h, and rinsed attapulgite is obtained after suction filtration; the rinsed attapulgite and 3wt% hydroxide are oxidized The sodium solution is added into the container according to the solid-to-liquid ratio of 1g:3mL, stirred at 60°C for 2h, after the end, the resulting slurry is filtered, washed to neutral, dried, crushed and sieved to obtain 200 mesh activated alkali Attapulgite.

Embodiment 2

[0012] Embodiment 2: Attapulgite and water are added to the container in an amount of 1g:8mL according to the solid-to-liquid ratio, stirred at 80°C for 2h, and rinsed attapulgite is obtained after suction filtration; rinse attapulgite and 10wt% potassium hydroxide solution Add it into the container at a solid-to-liquid ratio of 1g:6mL, stir at 90°C for 3 hours, filter and wash the obtained slurry until neutral, dry, crush and sieve to obtain 200 meshes of alkali-activated attapulgite .

Embodiment 3

[0013] Embodiment 3: Attapulgite and water are added in the container according to the solid-to-liquid ratio of 1g: 10mL, stirred at 90°C for 3h, and rinsed attapulgite is obtained after suction filtration; rinse attapulgite and 15wt% barium hydroxide solution Put it into the container according to the solid-liquid ratio of 1g:8mL, stir at 100°C for 5h, filter and wash the obtained slurry until neutral, dry, crush and sieve to obtain 200-mesh alkali-activated attapulgite .

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Abstract

The invention provides a method for desulfurization and dephosphorization of clay for electrode coating. First, the clay minerals ground into powder are rinsed with water at 60-90°C, and then the rinsed clay obtained is subjected to 3-15% alkali solution at 60-100°C. °C modification treatment for 1-3h, after the end, the obtained slurry was filtered, washed, dried, pulverized and sieved to obtain >200 mesh powder. The invention adopts non-metallic clay minerals as raw materials, and prepares the clay auxiliary material suitable for welding electrode coating through simple rinsing and alkali activation treatment. The preparation method is simple, the cost is low, the industrial scale-up production is easy, and the invention is widely used in the field of welding materials.

Description

technical field [0001] The invention relates to the technical field of welding auxiliary materials, in particular to a method for desulfurizing and dephosphorizing clay used for coating of electric welding electrodes. Background technique [0002] Today, with the rapid development of science and technology, welding has successfully completed its own transformation, and China has also become the world's largest producer of welding materials. According to statistics, the annual demand for welding rods in my country reaches 15 million tons, but the actual production is less than 1 million tons. The market has a large demand for welding rods, and the demand for welding rod coatings also increases accordingly. In recent years, due to the substantial price increase of auxiliary materials, especially titanium dioxide and rutile, the production cost of welding rods has increased. In order to reduce production costs, the welding industry has introduced many cheap and abundant silica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/04
Inventor 陈新德杨丹彭芬张海荣郭海军王璨熊莲黄超
Owner 盱眙凹土能源环保材料研发中心
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