A production system and production process of food-grade titanium dioxide

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: 2017-06-06
HEBEI MILSON TITANIUM DIOXIDE
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  • Summary
  • 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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  • A production system and production process of food-grade titanium dioxide
  • A production system and production process of food-grade titanium dioxide
  • A production system and production process of food-grade titanium dioxide

Examples

Experimental program
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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. The titanium dioxide raw material and deionized water are fed into the beating tank 1. The mixing ratio of the titanium dioxide raw material and the deionized water is 3:7 by weight, and the stirring device performs stirring and beating to form a slurry;

[0028] b. Inject the slurry into the pulverizing device 3 for pu...

Embodiment 2

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

[0033] a. The titanium dioxide raw material and deionized water are fed into the beating tank 1. The mixing ratio of the titanium dioxide raw material and the deionized water is 3:7 by weight, and the stirring de...

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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 specifically relates to a food-grade titanium dioxide production system and a production process thereof. Background technique [0002] Food-grade titanium dioxide is an anatase-type titanium dioxide with a higher fraction of non-coated treatment. It is commonly called white pigment in the field of food and medicine. It can also be called food-grade titanium dioxide, or pharmaceutical grade titanium dioxide, edible titanium dioxide, and also used as food whitening It is used as a non-toxic, odorless, white powder. Sometimes it is also made into liquid for easy dispersion. It 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 phosphate ions in industrial-grade titanium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/047
Inventor 张建平张川张千张潇
Owner HEBEI MILSON TITANIUM DIOXIDE
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