Particulate ferric oxide red pigment and method for producing the same

Abstract

The invention discloses a granular iron oxide red pigment and a manufacturing method thereof. The particle diameter of the granular iron oxide red pigment is 5-100 mesh. The manufacturing method of granular iron oxide red pigment includes the following steps: A. Prepare additives into 0.3-10% aqueous solution and heat at 30-100°C; B. Take 100kg of iron oxide red, add it to a granulator, and use 15-40kg of additive aqueous solution Spray onto the powder to gradually form granular pigments; C. Screen with a vibrating sieve, and dry the obtained material to obtain the finished product. The additive is a combination of any two or more components in sodium carboxymethylcellulose, polyvinyl alcohol, sodium silicate, gelatin, sodium lignosulfonate, and ferrous sulfate. This granular iron oxide red pigment and its manufacturing method do not change the performance of the product, nor affect the use effect, and solve the problem of replacing the powdered iron red pigment. It has very important practical significance for solving the occupational disease problem caused by pigment dust pollution. .

Description

technical field

[0001] The invention relates to a pigment and a manufacturing method thereof, in particular to a granular iron oxide red pigment and a manufacturing method thereof. technical background

[0002] At present, iron oxide red pigments are all in powder form. Due to the small size of dust particles, people who are in frequent contact with them are very susceptible to occupational diseases, especially pneumoconiosis. Pneumoconiosis refers to a disease mainly caused by lung tissue fibrosis caused by inhaling dust during production activities. It has the characteristics of high morbidity and mortality. my country is the country with the largest number of pneumoconiosis cases in the world. According to statistics from the Ministry of Health in 2002, the number of pneumoconiosis, a typical occupational disease, has reached 430,000 in my country, which is equivalent to the sum of the number of cases in other countries. Since the inspection rate of dust workers in vari...