KR20020097084A - Manufacturing Process of Red Pigment - Google Patents

Abstract

PURPOSE: A method for preparing a red pigment is provided, which does not contain lead and chromium which is toxic to the human body and pollutant, and is used as a pigment for a paint or plastic. CONSTITUTION: The method comprises the steps of injecting the composition comprising 30 wt% of yellow iron oxide, 30 wt% of red iron oxide, 20 wt% of titanium dioxide and permanent red into a machine; pulverizing the composition; and mixing, examining and packing it.

Description

Manufacturing Process of Red Pigment {Manufacturing Process of Red Pigment}

The present invention relates to a method for producing a red pigment, which will be described in more detail. will be.

Conventionally, the pigments used to make the color of paint, ink or plastic red are composed mainly of lead (Pb) and chromium (Cr), which are harmful to the human body. Rather, because they are destroying the natural environment, these ingredients are now being regulated worldwide.

The present invention has been invented to solve the above problems, the present invention is a red pigment which is harmless to the human body and is environmentally friendly when used in the use of color such as paint or plastic and yellow iron oxide (Fe ₂ O by weight ratio in the manufacturing method) ₃ ) 30wt%, red iron oxide (Fe ₂ O ₃ ) 30wt%, carbon dioxide (TiO ₂ ) 20wt% and Permanent Red (C ₂₆ H ₂₂ N ₄ O ₄ ) 20wt% ratio and the manufacturing process of the material It is carried out in five stages: (raw material) → grinding → mixing → coloration (inspection) → packaging.

1 is a process diagram of the present invention

2 is an embodiment of the present invention

* Explanation of symbols for important parts of drawing

(A)-input process of material

(B)-grinding process

(C)-mixing process

(D)-Toning (Inspection) Process

(E)-Packing process

1- Mixing Mill Operation Panel 2-Hopper 3-Crusher 4-Feed Line

5-dust collector 6-mixer 7-screw 8-bag

9-digital balance 10-packer control panel

This will be described in detail with reference to the drawings as follows.

In the selection and composition of materials, yellow iron oxide (Fe ₂ O ₃ ) and red iron oxide (Fe ₂ O ₃ ), carbon dioxide (TiO ₂ ) and permanent red (C ₂₆ H ₂₂ N ₄ O ₄ ) are selected as the material. Its composition ratio is a weight ratio of 30 wt% of yellow iron oxide, 30 wt% of red iron oxide, 20 wt% of titanium dioxide, and 20 wt% of permanent red, but may be added or decreased depending on the brightness (brightness) of the color.

The first step, which as a material In the process (A), the above yellow iron oxide (Fe ₂ O ₃₎ and red iron oxide (Fe ₂ O _3), carbon dioxide (TiO ₂₎ and permanent red _{(C 26 H 22 N 4 O} 4) Is measured in a constant weight ratio and injected into the hopper (2).

2nd process This is a grinding | pulverization process (B) in which the raw material thrown in the hopper 2 is thrown into the grinding | pulverization machine 3 installed below, and grind | pulverized.

This crushing step (B) is for facilitating mixing of the materials and continues to disintegrate finely (more than 500 mesh) until the hopper 2 has no material.

Third process This is a mixing process (C), and the finely ground pulverized product in the pulverizer 3 of the second process is transferred to the mixer 6 through the transfer line 4 using an air compressor.

In the mixer 6 equipped with the dust collector 5, the mixture is mixed for about 1 hour through an internal mechanism.

4th process This is a coloring (inspection) process (D), and a sample is taken from the mixture which passed the said mixing process (C), and an inspection is performed.

5th process This is a packaging process (E), and the product which passed the said coloration process (D) is put into a bag through the screw 7, and sealed. At this time, the packaging is packaged and shipped in the bag 8 with a net quantity of 25 kg using the digital balance 9.

Next, an embodiment of the present invention is as follows.

300 kg yellow iron oxide (Fe ₂ O ₃ ), 300 kg red iron oxide (Fe ₂ O ₃ ), ₂₀₀ kg carbon dioxide (TiO ₂ ) and permanent red (C ₂₆ H ₂₂ N ₄ O ₄₎ When 200 kg is accurately measured and put into the hopper 2 which is the first process (A), and then the grinder 3 is operated in the crushing process (B) which is the second process, the material contained in the hopper 2 disappears. Continue grinding until finely ground (over 500 mesh).

After the pulverization is completed in the pulverizer 3, the pulverized material is transferred to the mixer 6 through the transfer line 4 using an air compressor in order to perform the third mixing process (C). The material transferred to the mixer 6 is mixed for about 1 hour in the mixer 6, and then a small amount (10 g) of the sample is mixed among the mixed products to perform the fourth process, the coloration (inspection) process (D). Collect it and inspect it using a normal inspection machine.

After the toning step (D) is completed, the fifth step, the packing step (E) is performed.

In this packaging step (E), the digital balance 9 is used to pack the bag in the bag 8 in a net quantity of 25 kg and then ship.

As described above, the present invention mixes yellow iron oxide (Fe ₂ O ₃ ) and red iron oxide (Fe ₂ O ₃ ), carbon dioxide (TiO ₂ ) and permanent red (C ₂₆ H ₂₂ N ₄ O ₄ ), which are harmless to humans. The composition ratio is 30wt% of yellow iron oxide: 30wt% of red iron oxide: 20wt% of titanium dioxide: 20wt% of permanent red. It is an industrially useful invention because it has excellent hiding power and weather resistance, is harmless to the human body, is friendly to the natural environment, and the production cost is low.

Claims (1)

In the process of producing a pigment in the order of material input step (A) decomposition step (B) mixing step (C) coloration step (D) packaging step (E), the material is yellow iron oxide (Fe ₂ O ₃ ), red iron oxide. (Fe ₂ O ₃ ), carbon dioxide (TiO ₂ ) and permanent red (C ₂₆ H ₂₂ N ₄ O ₄ ) It is composed of 30wt% of yellow iron oxide, 30wt% red iron oxide, 20wt% of titanium dioxide (TiO ₂ ) and A method for producing a red pigment, characterized in that the composition in a weight ratio of permanent red 20wt%.