Food-grade titanium dioxide producing system and technology

A titanium dioxide and production system technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems that the safety of food-grade titanium dioxide cannot be guaranteed, affect product purity and quality, and have toxic residues, etc., to achieve safety assurance, The effect of improving purity and yield and avoiding residue

Active Publication Date: 2015-12-02
HEBEI MILSON TITANIUM DIOXIDE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the production process of food grade titanium dioxide mainly uses industrial grade titanium dioxide for extraction. There are impurities such as heavy metal ions, sulfate ions and phosphate ions in industrial grade titanium dioxide. The existing production process includes beating, extraction, pressure filtration, drying and Pulverize, finally form food-grade titanium dioxide product, the patent document that application number is CN201010282221.4 has introduced a kind of production technology that utilizes industrial-grade titanium dioxide to prepare food-grade titanium dioxide, and this process also utilizes industrial-grade titanium dioxide to carry out extraction to produce food-grade titanium dioxide, extraction Additional reagents will be added during the process, and the final product will have foreign reagent residues, which will affect the purity and quality of the product. In the existing process, in order to prevent titanium dioxide from bonding during processing, dispersants are often added to the extracted titanium dioxide , resulting in toxic residues in the final product, the safety of food-grade titanium dioxide cannot be guaranteed

Method used

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  • Food-grade titanium dioxide producing system and technology
  • Food-grade titanium dioxide producing system and technology
  • Food-grade titanium dioxide producing system and technology

Examples

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Effect test

Embodiment 1

[0026] Example 1, such as figure 1 As shown, a washing mechanism is connected between the first ultrasonic vibrating screen 6 and the drying device 2. The washing mechanism includes a connected washing tank 7 and a filter device. The washing tank 7 is connected with a water pipeline and an acetic acid pipeline. 7. The input end is connected to the output end of the first ultrasonic vibrating screen 6, and the output end of the filtering device is connected to the input end of the drying device 2. The filtering device is the second ultrasonic vibrating screen 8. On this basis, food-grade titanium dioxide The production process includes the following steps:

[0027] a. Input the titanium dioxide raw material and deionized water into the beating tank 1, the mixing ratio between the titanium dioxide raw material and the deionized water is 3:7 by weight, and the stirring device forms a slurry after stirring and beating;

[0028] B, the slurry is injected into the crushing device 3...

Embodiment 2

[0032] Example 2, such as figure 2 As shown, the first ultrasonic vibrating screen 6 and the drying device 2 are sequentially connected with three washing mechanisms, the washing mechanism includes a washing tank 7 and a filtering device connected from front to back, and the three washing tanks 7 are respectively connected with water pipes Road, acetic acid pipeline and water pipeline, the input end of the washing tank 7 of the most front washing mechanism is connected with the output end of the first ultrasonic vibrating screen 6, and the output end of the filter device of the last washing mechanism is connected with the input end of the drying device 2, said The filtering device is the second ultrasonic vibrating screen 8, on this basis, the production technology of food-grade titanium dioxide comprises the following steps:

[0033] a. Input the titanium dioxide raw material and deionized water into the beating tank 1, the mixing ratio between the titanium dioxide raw mater...

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Abstract

The invention relates to a food-grade titanium dioxide producing system and technology, and belongs to the technical field of food additives. The producing technology includes the steps that industrial-grade titanium dioxide is used as a raw material, the raw material and deionized water are mixed and stirred into slurry, the slurry is ground and smashed through a grinding machine, the ground slurry is ultrasonically vibrated and filtered to extract titanium dioxide out, the titanium dioxide is sequentially washed with water, acetic acid and water, the titanium dioxide is ultrasonically vibrated and filtered once after each washing, and then the obtained titanium dioxide is dried to obtain food-grade titanium dioxide finally. According to the food-grade titanium dioxide producing system and technology, the extraction working procedure is improved to be ultrasonic vibration and filtration to replace an extraction mode, and an extraction reagent is prevented from be left over; by means of the depolymerization action of ultrasonic vibration, virulence residue in the final product due to dispersant utilization is avoided. The food-grade titanium dioxide obtained by using the producing technology is low in impurity content and high in quality.

Description

technical field [0001] The invention belongs to the technical field of food additive production, and in particular relates to a food-grade titanium dioxide production system and a production process thereof. Background technique [0002] Food-grade titanium dioxide is anatase-type titanium dioxide with relatively high fractionation and non-coating treatment. In the field of food and medicine, it is often called white pigment, and it can also be called food-grade titanium dioxide, or pharmaceutical-grade titanium dioxide. Edible titanium dioxide is also used as food whitening It is used as a non-toxic, odorless, white powder, sometimes it is also made into a liquid for the convenience of dispersion, and is widely used in the pharmaceutical, food and cosmetic industries. [0003] At present, the production process of food grade titanium dioxide mainly uses industrial grade titanium dioxide for extraction. There are impurities such as heavy metal ions, sulfate ions and phosphat...

Claims

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Application Information

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IPC IPC(8): C01G23/047
Inventor 张建平张川张千张潇
Owner HEBEI MILSON TITANIUM DIOXIDE
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