Method for preparing nepheline syenite powder

A technology for nepheline syenite and powder, which is applied in the field of preparing nepheline syenite ultra-fine-grained powder, can solve problems such as hole plugging, affecting product densification, etc., and achieve pressure reduction, uniform change, and relative speed. slow effect

Inactive Publication Date: 2010-12-15
广东奥胜新材料有限公司
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Problems solved by technology

The same is nepheline syenite, the angular irregular particles will appear glass phase earlier than the spherical particles, which will prematurely plug the unsintered pores and affect the densification of the product

Method used

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  • Method for preparing nepheline syenite powder
  • Method for preparing nepheline syenite powder

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Embodiment Construction

[0016] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

[0017] A method for preparing nepheline syenite powder. The process of the method includes elutriation of raw materials, crushing ore, classification and screening, ball milling, impurity removal and filtration, and dehydration and drying. The procedure of impurity removal and filtration includes floating Selective process to remove mica from nepheline syenite. The flotation process adopts three kinds of medicaments of primary amine salt, sodium silicate and sodium carbonate, and the weight ratio of the three kinds of medicaments is (2.5-3.5): 1: 1 successively, and the consumption sum of the three kinds of medicaments is the flotation material 0.3%-0.8% by weight. According to the actual situation, the dosage of the flotation agent can be adjusted appropriately. In order to ensure the flotation ef...

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Abstract

The invention relates to a method for preparing nepheline syenite powder. The method comprises the following steps of: elutriating and washing raw materials; smashing ores; performing graded screening; performing ball milling and fine crushing; removing impurities and filtering; and dewatering and drying, wherein the impurity-removing and filtering step comprises a flotation procedure for removing mica in the nepheline syenite. A two-stage closed-loop wet grinding process, a flotation process and a magnetic separation and impurity removing process are adopted by the method, so that impuritiessuch as the mica and the like can be removed basically and a contradiction between purification and super small product particle size is solved. Material smashing and grinding are performed by using a closed-loop system, so that power consumption is lowered to the maximum extent and the reasonable distribution of the product particle size is ensured simultaneously. A new high-purity nepheline syenite material which hardly contains any mica impurity and is prepared by the method has TiO2 content of lower than 0.01 percent and Fe2O3 content of lower than 0.10 percent and meets the requirements of functional ceramics and structural ceramics.

Description

technical field [0001] The invention relates to a method for preparing nepheline syenite powder, in particular to a process for preparing nepheline syenite powder with ultrafine particle size. Background technique [0002] Nepheline syenite is a good raw material for ceramics. In the past, nepheline syenite processed domestically could not be used to make structural ceramics and functional ceramics because its technical indicators such as purity, particle size and particle shape could not meet the requirements. Ordinary ceramics. In particular, nepheline syenite generally has the disadvantages of high content of iron and titanium, and mica impurities. The traditional purification process only uses a magnetic separator to remove iron and other magnetic substances. However, mica is an impurity that is difficult to magnetize, and it is difficult for a magnetic separator to remove mica from nepheline syenite. The structure of mica itself contains iron element, so that Fe in n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/00
Inventor 陆文艺赵廷刚
Owner 广东奥胜新材料有限公司
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