Acid-modified white ash compound basic lead phosphate auxiliary and preparation method thereof

Abstract

The invention discloses an acid-modified white ash compound basic lead phosphate auxiliary. White ash which is produced in a copper smelting process and is collected by virtue of an electrical dust precipitation process and phosphorus trichloride are adopted as raw materials, reaction is carried out under the catalytic action of glacial acetic acid for removing soluble metal ions, insoluble metalions are modified to generate precipitates, and filtering and drying are carried out, so that the acid-modified white ash compound basic lead phosphate auxiliary is obtained. The acid-modified white ash compound basic lead phosphate auxiliary disclosed by the invention has the advantages that industrial waste slag is adopted as a raw material, the raw material is extensive in source and low in price; and a preparation method of the acid-modified white ash compound basic lead phosphate auxiliary is simple and reasonable in operation, poisoning caused by lead dust during production and use is avoided, and product performance is good, so that the acid-modified white ash compound basic lead phosphate auxiliary is applicable to industrial production.

Description

technical field

[0001] The invention specifically relates to an acidified modified white soot composite base lead phosphite additive and a preparation method thereof. Background technique

[0002] Dibasic lead phosphite is a white or slightly yellow powder. Because of its excellent properties such as weather resistance, thermal stability, electrical insulation, etc., it also has the properties of anti-oxidation and UV shielding. Therefore, it is widely used as heat stabilizer for polyvinyl chloride and polyvinyl chloride / polyethylene copolymer, especially opaque hard and soft products such as outdoor cables, building boards, corrugated boards, and pipes. The traditional dibasic lead phosphite is produced from green lead, acetic acid, liquid caustic soda and phosphorous acid, or from lead oxide and phosphorous acid. The production process is complicated, the cost is high, and the dust is large during use. The number of measurements is large, and measurement errors are prone...

Examples

Embodiment 1

[0022] (1) Raw materials for the test: The copper smelting product of the copper smelting plant of the Baiyin Nonferrous Metals Group Co., Ltd. was used as the raw material for electro-recovery comprehensive soot (white soot). The composition of the white soot is shown in Table 1.

[0023] (2) Preparation method:

[0024] a. Add water, white soot and glacial acetic acid into the acid-resistant leaching tank in sequence according to the solid-to-liquid ratio of 1:3:0.005, start stirring at a speed of 120r / min, and stir to form a slurry;

[0025] b. Weigh phosphorus trichloride with 20% of the mass of white soot, and then slowly drop it into the above slurry under stirring, the dropping time is 60min, and the stirring speed is 120r / min; the dropping process and the leaching process must be ventilated Good, to prevent the generation of arsine or phosphine.

[0026] c. After adding phosphorus trichloride, heat to 50°C and continue the leaching reaction for 5 hours.

[0027] d. A...

Embodiment 2

[0031] (1) Raw materials for the test: The copper smelting product of the copper smelting plant of the Baiyin Nonferrous Metals Group Co., Ltd. was used as the raw material for electro-recovery comprehensive soot (white soot). The composition of the white soot is shown in Table 1.

[0032] (2) Preparation method:

[0033] a. Add water, white soot and glacial acetic acid into the acid-resistant leaching tank in sequence according to the solid-to-liquid ratio of 1:5:0.02, start stirring at a speed of 90r / min, and stir to form a slurry;

[0034] b. Weigh phosphorus trichloride with 40% mass of white soot, and then slowly drop it into the above slurry under stirring, the dropping time is 30min, and the stirring speed is 90r / min; the dropping process and leaching process must be ventilated Good, to prevent the generation of arsine or phosphine.

[0035] c. After adding phosphorus trichloride, heat to 50°C and continue the leaching reaction for 2 hours.

[0036] d. After the leach...

Embodiment 3

[0040] (1) Raw materials for the test: The copper smelting product of the copper smelting plant of the Baiyin Nonferrous Metals Group Co., Ltd. was used as the raw material for electro-recovery comprehensive soot (white soot). The composition of the white soot is shown in Table 1.

[0041] (2) Preparation method:

[0042] a. Add water, white soot and glacial acetic acid into the acid-resistant leaching tank in sequence according to the solid-to-liquid ratio of 1:4:0.01, start stirring at a speed of 120r / min, and stir to form a slurry;

[0043] b. Weigh phosphorus trichloride with 30% of the mass of white soot, and then slowly drop it into the above slurry under stirring, the dropping time is 45min, and the stirring speed is 120r / min; the dropping process and the leaching process must be ventilated Good, to prevent the generation of arsine or phosphine.

[0044] c. After adding phosphorus trichloride, heat to 70°C and continue the leaching reaction for 4 hours.

[0045] d. Af...

technical field

[0001] The invention specifically relates to an acidified modified white soot composite base lead phosphite additive and a preparation method thereof. Background technique

[0002] Dibasic lead phosphite is a white or slightly yellow powder. Because of its excellent properties such as weather resistance, thermal stability, electrical insulation, etc., it also has the properties of anti-oxidation and UV shielding. Therefore, it is widely used as heat stabilizer for polyvinyl chloride and polyvinyl chloride / polyethylene copolymer, especially opaque hard and soft products such as outdoor cables, building boards, corrugated boards, and pipes. The traditional dibasic lead phosphite is produced from green lead, acetic acid, liquid caustic soda and phosphorous acid, or from lead oxide and phosphorous acid. The production process is complicated, the cost is high, and the dust is large during use. The number of measurements is large, and measurement errors are prone...

Examples

Embodiment 1

[0022] (1) Raw materials for the test: The copper smelting product of the copper smelting plant of the Baiyin Nonferrous Metals Group Co., Ltd. was used as the raw material for electro-recovery comprehensive soot (white soot). The composition of the white soot is shown in Table 1.

[0023] (2) Preparation method:

[0024] a. Add water, white soot and glacial acetic acid into the acid-resistant leaching tank in sequence according to the solid-to-liquid ratio of 1:3:0.005, start stirring at a speed of 120r / min, and stir to form a slurry;

[0025] b. Weigh phosphorus trichloride with 20% of the mass of white soot, and then slowly drop it into the above slurry under stirring, the dropping time is 60min, and the stirring speed is 120r / min; the dropping process and the leaching process must be ventilated Good, to prevent the generation of arsine or phosphine.

[0026] c. After adding phosphorus trichloride, heat to 50°C and continue the leaching reaction for 5 hours.

[0027] d. A...

Embodiment 2

[0031] (1) Raw materials for the test: The copper smelting product of the copper smelting plant of the Baiyin Nonferrous Metals Group Co., Ltd. was used as the raw material for electro-recovery comprehensive soot (white soot). The composition of the white soot is shown in Table 1.

[0032] (2) Preparation method:

[0033] a. Add water, white soot and glacial acetic acid into the acid-resistant leaching tank in sequence according to the solid-to-liquid ratio of 1:5:0.02, start stirring at a speed of 90r / min, and stir to form a slurry;

[0034] b. Weigh phosphorus trichloride with 40% mass of white soot, and then slowly drop it into the above slurry under stirring, the dropping time is 30min, and the stirring speed is 90r / min; the dropping process and leaching process must be ventilated Good, to prevent the generation of arsine or phosphine.

[0035] c. After adding phosphorus trichloride, heat to 50°C and continue the leaching reaction for 2 hours.

[0036] d. After the leach...

Embodiment 3

[0040] (1) Raw materials for the test: The copper smelting product of the copper smelting plant of the Baiyin Nonferrous Metals Group Co., Ltd. was used as the raw material for electro-recovery comprehensive soot (white soot). The composition of the white soot is shown in Table 1.

[0041] (2) Preparation method:

[0042] a. Add water, white soot and glacial acetic acid into the acid-resistant leaching tank in sequence according to the solid-to-liquid ratio of 1:4:0.01, start stirring at a speed of 120r / min, and stir to form a slurry;

[0043] b. Weigh phosphorus trichloride with 30% of the mass of white soot, and then slowly drop it into the above slurry under stirring, the dropping time is 45min, and the stirring speed is 120r / min; the dropping process and the leaching process must be ventilated Good, to prevent the generation of arsine or phosphine.

[0044] c. After adding phosphorus trichloride, heat to 70°C and continue the leaching reaction for 4 hours.

[0045] d. Af...

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