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Method for surface modification of heavy calcium carbonate by utilization of drainage oil

A technology of heavy calcium carbonate and surface modification, applied in the field of surface treatment of non-metallic minerals, to achieve the effects of saving production costs, significant social value, and good promotion value

Active Publication Date: 2015-10-28
广西康利岗石有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After retrieval, there has never been any report on the use of waste oil to synthesize modifiers, especially for surface modification of ground calcium carbonate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Centrifuge the waste oil to remove suspended solids, dry and dehydrate, and decolorize with active white powder.

[0020] (2) Get 100g of decolorized waste oil, add 50g of water, add 0.4g of sodium dodecylbenzenesulfonate, add 3g of 98% concentrated sulfuric acid, and heat and reflux at 85°C under stirring conditions. After reacting for 4 hours, directly Heating to above 100°C for high-temperature demulsification, after 10 minutes of reaction, pour the hydrolyzed solution into a separatory funnel, and let it stand for stratification.

[0021] (3) Release the water layer, wash the oil layer twice with water, and use a rotary evaporator at 80°C after liquid separation to remove moisture and low-boiling fractions to obtain a modifier for surface modification of heavy calcium carbonate . The acid value of the modifier increased from 0.3349mgKOH / g to 28.8547mgKOH / g.

[0022] (4) Get 100g of heavy calcium carbonate, add 1000g of water, add 4g of a modifying agent synthe...

Embodiment 2

[0024] (1) Centrifuge the waste oil to remove suspended matter, dry and dehydrate, and decolorize with activated clay.

[0025] (2) Get 100g of decolorized waste oil, add 75g of water, add 0.5g of sodium dodecylbenzenesulfonate, add 3g of 98% concentrated sulfuric acid, heat and reflux at 90°C under stirring conditions, react for 4 hours, and directly Heating to above 100°C for high-temperature demulsification, after 10 minutes of reaction, pour the hydrolyzed solution into a separatory funnel, and let it stand for stratification.

[0026] (3) Release the water layer, wash the oil layer twice with water, and use a rotary evaporator at 80°C after liquid separation to remove moisture and low-boiling fractions to obtain a modifier for surface modification of heavy calcium carbonate . The acid value of the modifier increased from 0.3349mgKOH / g to 28.4475mgKOH / g.

[0027] (4) Get 100g of heavy calcium carbonate, add 1000g of water, add 3g of a modifying agent synthesized from was...

Embodiment 3

[0029] (1) Centrifuge the waste oil to remove suspended matter, dry and dehydrate, and decolorize with activated clay.

[0030] (2) Get 100g of decolorized waste oil, add 50g of water, add 0.5g of sodium dodecylbenzene sulfonate, add 3g of 98% concentrated sulfuric acid, heat and reflux at 85°C under stirring conditions, react for 5 hours, and directly Heating to above 100°C for high-temperature demulsification, after 10 minutes of reaction, pour the hydrolyzed solution into a separatory funnel, and let it stand for stratification.

[0031] (3) Release the water layer, wash the oil layer twice with water, and use a rotary evaporator at 80°C after liquid separation to remove moisture and low-boiling fractions to obtain a modifier for surface modification of heavy calcium carbonate . The acid value of the modifier increased from 0.3349mgKOH / g to 32.4599mgKOH / g.

[0032] (4) Get 100g of heavy calcium carbonate, add 1000g of water, add 3g of a modifying agent synthesized by wast...

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Abstract

The invention relates to a method for surface modification of heavy calcium carbonate by the utilization of drainage oil. A synthesis method of a modifier comprises the following steps: (a) drainage oil is purified and refined; (b) hydrolysis is conducted by the use of the purified and refined drainage oil; and (c) moisture and low-boiling fraction are removed from a hydrolysate by a rotary evaporator so as to obtain the modifier for surface modification of heavy calcium carbonate. By the use of the drainage oil for surface modification of heavy calcium carbonate, surface activity of heavy calcium carbonate can be enhanced, dispersity of heavy calcium carbonate can be raised, and oil-adsorbed value of heavy calcium carbonate can be reduced. The active heavy calcium carbonate prepared by the method can be widely applied in fields of plastic, paint, rubber, papermaking and the like, and can be used as a functional filler. As the modifier used in the invention is synthesized by the use of drainage oil, the technical scheme of the invention is of great significance for waste utilization, food safety, powder modification and the like.

Description

technical field [0001] The patent of the present invention relates to a surface treatment method of non-metallic minerals, in particular to a method for surface modification of heavy calcium carbonate using waste oil. Background technique [0002] Waste oil is a non-edible oil with extremely poor quality and sanitation, and its peroxide value, acid value, moisture, carbonyl value, malondialdehyde and other indicators seriously exceed the standard. Greasy floating matter or the oil obtained by simple processing and refining of leftovers and leftovers in hotels and restaurants; the second is the oil processed and refined from inferior pork, pig offal, and pig skin; the third is the oil used for fried food After the number of times exceeds the specified requirements, it is reused or re-used after adding some new oil to it. Compared with edible oil, the heavy metals and toxins in waste oil seriously exceed the standard, and the peroxide value far exceeds the national standard. ...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08
Inventor 汤泉曾一文张志周国永梁琼芳
Owner 广西康利岗石有限公司
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