Preparation method for modified sodium base bentonite

A technology of sodium-based bentonite and bentonite, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problem of low viscosity of modified sodium-based bentonite, and achieve high expansion index, convenient operation and high viscosity
CN107585772AInactive Publication Date: 2018-01-16宣化燕北矿业有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宣化燕北矿业有限责任公司
Publication Date
2018-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of deep processing of bentonite ore, and concretely discloses a preparation method for modified sodium base bentonite. The preparation method comprises thefollowing steps: crushing raw ore bentonite, performing homogenization treatment, and screening particle sizes to obtain raw ore soil; mixing the raw ore soil, a sodium agent and a modifying auxiliary agent to obtain a mixed material; and adding water into the mixed material, performing stirring treatment, performing stacking ageing treatment, and performing drying to obtain the modified sodium base bentonite. The preparation method for the modified sodium base bentonite provided by the invention is simple in process, convenient for operation, safe and environmentally friendly, and the obtained modified sodium base bentonite has high viscosity, a low filtration loss amount, and a high swelling index.
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Description

technical field

[0001] The invention relates to the technical field of deep processing of bentonite ore, in particular to a preparation method of modified sodium-based bentonite. Background technique

[0002] Xuanhua has large reserves of local bentonite mineral resources and a long history of mining. Over the years, Xuanhua's bentonite products have been limited to calcium-based soil products and low-quality sodium-based products used in metallurgical pellets and small castings, as well as large shields and pile foundations (also Appeared only in recent years) Extensive products with low viscosity (pulping rate) for engineering.

[0003] Since most of the local bentonite ore types are calcium-based, calcium-sodium, and calcium-magnesium types, theoretically speaking, it is difficult to modify sodium with high viscosity and good dispersibility after artificial sodium modification. The base soil raw materials cannot produce bentonite products for drilling fluids required by ...

Claims

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