Composite Na-based bentonite and preparation method thereof

A bentonite and composite technology, applied in the field of chemistry, can solve the problems of heavy burden and economic loss, practical effect is difficult to achieve ideal state, high soil input, etc., achieve high anti-cracking performance, shorten high temperature roasting time, The effect of improving quality and yield

Active Publication Date: 2011-10-19
建平慧营化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire process is only physical treatment, so users can only purchase selectively according to the unique physical and chemical properties of different bentonites, and its practical effect is difficult to achieve the ideal state, especially the amount of soil input remains high, generally up to 3 -8% varies
Bring a greater burden and economic loss to the pelletizing and sintering enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation of embodiment 1 composite type Na base bentonite

[0021] Choose 1000g bentonite. The bentonite comprises 60% by weight of montmorillonite, and the bentonite comprises the following composition in % by weight: SiO 2 65%, Al 2 o 3 15.8%, Fe 2 o 3 3.10%, CaO 3.23%, K 2 O 0.80%, Na 2 O 0.65% and MgO 4.0%. The blue absorption of the bentonite is greater than 28, the expansion ratio is greater than 8, and the colloid value ml / 15g is greater than or equal to 70. Dry the material naturally to make it dehydrated naturally. When the water content reaches 15-20%, use GXDF6 fluidized fluidized furnace drying equipment. The amount of water is 12%. Add 10% heavy Na by weight of material 2 CO 3 , after stirring, heap leaching for more than 24 hours for later use. After production scheduling, use 4R3216 Raymond machine to grind until 90% passes through 325 mesh sieve. Add 10 g of ammonium nitrate and mix to obtain composite Na-based bentonite. The swell...

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Abstract

The invention relates to composite Na-based bentonite and a preparation method thereof. The composite Na-based bentonite is prepared by the following steps of material selecting, drying, chemosynthesiThe invention relates to composite Na-based bentonite and a preparation method thereof. The composite Na-based bentonite is prepared by the following steps of material selecting, drying, chemosynthesis, crushing, re-synthesis and post-processing. The composite Na-based bentonitic clay prepared according to the method solves the problem that is required to be solved but can not be solved in iron ins, crushing, re-synthesis and post-processing. The composite Na-based bentonitic clay prepared according to the method solves the problem that is required to be solved but can not be solved in iron industry for many years, greatly reduces the soil quantity during the production, and simultaneously realizes multiple comprehensive economic benefits and environment-protective benefits of saving energdustry for many years, greatly reduces the soil quantity during the production, and simultaneously realizes multiple comprehensive economic benefits and environment-protective benefits of saving energy, reducing consumption, improving output, reducing slag discharging and reducing pollution.y, reducing consumption, improving output, reducing slag discharging and reducing pollution.

Description

technical field [0001] The invention relates to the chemical field, in particular, the invention relates to a composite Na-based bentonite and a preparation method thereof. Background technique [0002] Bentonite is a non-metallic clay mineral with montmorillonite as the main component. Because of its stable chemical composition, it is widely used in casting, drilling mud, iron ore pellets, grease decolorization and other fields, especially in the production of pellets in the steel industry, It is an indispensable auxiliary material in sintering production. [0003] The main component of bentonite, montmorillonite, is an aluminosilicate with expansibility, layered structure, and strong water absorption. The cation exchange capacity and adsorption capacity can effectively improve the pelletizing properties of materials and the characteristics of raw pellets, dry pellets and roasted pellets in the production of pellets, and can adjust the moisture content of raw materials and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40
Inventor 刘天会
Owner 建平慧营化工有限公司
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