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Dry-process pre-sintering sampling inspection method

An inspection method and pre-burning material technology, applied in the direction of sampling devices, analysis materials, measuring devices, etc., can solve the problems of unqualified final products, achieve good economic and social benefits, effective process transformation, and good promotional effects

Inactive Publication Date: 2015-03-04
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide an inspection method using different sampling timings. The sampling inspection method of the present invention can overcome the defect that the final product is unqualified due to a batch of unqualified products caused by the existing inspection methods.

Method used

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Embodiment Construction

[0018] The specific implementation of the present invention will be further described below in conjunction with the examples, and the present invention is not limited to the scope of the examples.

[0019] In order to realize the representative operation of sampling samples in the dry rotary kiln process, hot-rolled iron scale and SrCO3 are used as raw materials, and the ingredients are mixed according to a certain molar ratio, and an appropriate amount of additives are added. The additive is kaolin, and then enters the intensive mixer, and then enters the pelletizing disc Balls are made, and the finished balls are dried and oxidized in the grate machine, and then enter the rotary kiln for pre-burning at 1300±20°C.

[0020] Sampling at about 200g / hour at the discharge port of the rotary kiln, put the sample into a special sample container consisting of 12 small squares (6 squares in each row, two rows in total), and carry out every 12 hours as a batch Mixing, the mixed sample ...

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Abstract

The invention belongs to the technical field of magnetic materials and in particular relates to a dry-process pre-sintering sampling inspection method. The invention aims to provide an inspection method adopting different sampling occasions. According to the sampling inspection method disclosed by the invention, the defect that the final product is unqualified due to a certain batch of unqualified products in the conventional inspection method can be overcome. After the sampling inspection method disclosed by the invention is used, the dry rotary kiln process comprises the following steps: treating the raw materials, weighing and batching, adding an additive, performing dry-process strong mixing, pelletizing, drying, performing oxidation presintering and inspection, cooling, crushing and blending. According to the dry-process pre-sintering sampling inspection method disclosed by the invention, the sampling is performed in the oxidation presintering step of the dry rotary kiln process, and subsequent inspection is performed.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and in particular relates to a method for sampling and inspecting dry calcined materials. Background technique [0002] Strontium ferrite pre-fired material is an important material for the production of magnetic poles in industry. At present, there are two basic production processes for strontium ferrite pre-fired material: dry rotary kiln process and wet rotary kiln process. Dry process rotary kiln process: raw material processing→weighing ingredients→adding additives→dry strong mixing→pelletizing→drying→oxidative pre-calcination→cooling→crushing→batch combining→inspection. The existing inspection method is to inspect after the batch is combined. Since multiple batches of pellets are broken into batches to obtain the final product, if the performance of a batch of pellets in the batch is unqualified, the performance of the final product may be unqualified and the loss will be magnifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N1/04
Inventor 王双杨妍林李林蒲光文李国胜
Owner PANZHIHUA GANGCHENG GROUP
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