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Combined type demoulding method for fusion in X-ray fluorescence analysis of iron oxide ore

A technology for fluorescence analysis and iron oxide ore, which is applied in the preparation of test samples, etc., can solve the problems of long release time, reduced production efficiency, increased operating costs, etc.

Inactive Publication Date: 2018-01-05
抚顺新钢铁有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of using lithium bromide release agent is that the release effect lasts for a long time; the disadvantage is that the release ability is relatively weak, and the requirements for the finish of the yellow platinum crucible are very high. Even a new yellow platinum crucible can only be melted into pieces on average. About 170 slices
However, the cost of recasting and repairing the yellow platinum crucible is relatively high, as high as about 12,000 yuan / time, which increases operating costs and reduces production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] ①Put 6g of anhydrous lithium tetraborate lithium metaborate mixed flux, 0.5g of cobalt powder, 0.5g of sample and 0.3g of lithium nitrate into the yellow platinum crucible, then add 1ml of lithium bromide solution with a mass concentration of 27%;

[0017] ②After the first heat stage (time 180 seconds, temperature 600°C), second heat stage (time 180 seconds, temperature 1100°C), enter the melting stage (time 240 seconds, temperature 1100°C, swing speed 6 times / second), add 0.015g of potassium iodide during the 180-200 seconds of the melting stage;

[0018] ③ After the self-cooling stage (300 seconds) and the air-cooling stage (240 seconds), number the samples and invert the crucible to remove the samples.

Embodiment 2

[0020] ①Put 6g of anhydrous lithium tetraborate lithium metaborate mixed flux, 0.5g of cobalt powder, 0.5g of sample and 0.3g of lithium nitrate into a yellow platinum crucible, then add 1ml of lithium bromide solution with a mass concentration of 27%;

[0021] ②After the first heat stage (time 180 seconds, temperature 600°C), second heat stage (time 180 seconds, temperature 1100°C), enter the melting stage (time 240 seconds, temperature 1100°C, swing speed 6 times / second), add 0.020g of potassium iodide during the 180-200 seconds of the melting stage;

[0022] ③ After the self-cooling stage (300 seconds) and the air-cooling stage (240 seconds), number the samples and invert the crucible to remove the samples.

Embodiment 3

[0024] ①Put 6g of anhydrous lithium tetraborate lithium metaborate mixed flux, 0.5g of cobalt powder, 0.5g of sample and 0.3g of lithium nitrate into a yellow platinum crucible, then add 1ml of lithium bromide solution with a mass concentration of 27%;

[0025] ②After the first heat stage (time 180 seconds, temperature 600°C), second heat stage (time 180 seconds, temperature 1100°C), enter the melting stage (time 240 seconds, temperature 1100°C, swing speed 6 times / second), add 0.025g potassium iodide during the period of 180 seconds to 200 seconds in the melting stage;

[0026] ③ After the self-cooling stage (300 seconds) and the air-cooling stage (240 seconds), number the samples and invert the crucible to remove the samples.

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PUM

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Abstract

The invention discloses a combined type demoulding method for fusion in X-ray fluorescence analysis of iron oxide ore. The method comprises the following steps: (1) a mixed solvent of anhydrous lithium tetraborate and lithium metaborate, cobalt powder, a sample and lithium nitrate are uniformly mixed, the mixture is added into an au-pt alloy crucible, and a lithium bromide solution is added; (2) after a primary heating stage and a secondary heating stage, a fusion stage begins, and potassium iodide is added during 180-200 seconds of the fusion stage; (3) after a self-cooling stage and an air-cooling stage, a sample piece is numbered and the crucible is inversed in order to take the sample piece out. Under the effects of a double releasing agent, the releasing effect is greatly improved, requirements on smoothness of the au-pt alloy crucible are reduced, and average usage life of the au-pt alloy crucible is increased from 170 times of fusion to more than 600 times of fusion; service life of the au-pt alloy crucible is increased by three times or above, recasting maintenance cost of the au-pt alloy crucible is reduced, operation cost is reduced, and economic benefit is improved.

Description

1. Technical field [0001] The invention belongs to the technical field of chip demolding, and in particular relates to a composite chip demoulding method in X-ray fluorescence analysis of iron oxide ore. 2. Background technology [0002] In the X-ray fluorescence analysis of iron-containing ores such as iron ore and ore powder, there are two functions of adding a release agent to the melt: 1. To improve the fluidity of the sample when it becomes liquid, so that the sample and other reagents Fully mixed together; 2. After completely melting and fully mixing, when cooling and shaping into pieces, the sample can be separated from the crucible. [0003] The current release method only uses a single release agent, that is, lithium bromide is used as the release agent. For example, in the X-ray fluorescence analysis of iron ore, slag powder and other iron-containing ores in the chemical inspection room of the Technical Department of Jianlong Group-Fushun New Iron and Steel Co., L...

Claims

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Application Information

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IPC IPC(8): G01N1/36
Inventor 俞连水梁宝才翁莉齐莹张猛孙平戴双隋兵邓明许奇志
Owner 抚顺新钢铁有限责任公司
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