Method for improving quality of copper smelting environment-friendly gypsum

Abstract

The invention relates to a method for improving the quality of copper smelting environmental integrated gypsum, and belongs to the technical field of improving the quality of the environmental integrated gypsum, recycling the environmental integrated gypsum: collecting the incompletely reacted environmental integrated gypsum, putting the incompletely reacted environmental integrated gypsum into a stirring bin, stirring at 30-50r / min for 5-20min, and preserving at the constant temperature of 30 DEG C for later use; pretreatment of the recycled gypsum: dehydrating, crushing and grinding the recycled gypsum for later use; slurry preparation: mixing the pretreated circulating gypsum, limestone powder and water to prepare slurry; deacidification reaction: adding the prepared slurry into the arsenic-removed waste acid at a constant speed of 0.2 m / s, controlling the temperature to be 45-50 DEG C, the time to be 1-2h, the rotating speed to be 60-100r / min, and the pH value at the reaction endpoint to be 1-2, so as to obtain deacidified slurry; and product treatment: carrying out water separation on the deacidified slurry, and drying to obtain completely reacted cyclic aggregate gypsum. The ring-collected gypsum which is not completely reacted is used as the deacidification agent to be recycled, so that the generation of wastes is reduced, and the cyclic utilization of the ring-collected gypsum is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of improving the quality of ring-forming gypsum, and in particular relates to a method for improving the quality of copper smelting ring-forming gypsum. Background Art

[0002] At present, the calcium carbonate absorption method is used to treat sulfur dioxide in flue gas. The average sulfur dioxide content is 700-1500 mg / Nm3. In the process of desulfurization using limestone powder in sulfuric acid plants, due to the low sulfur dioxide content, excessive limestone emulsion needs to be added during the spray desulfurization process to make the sulfur dioxide reach the emission standard of 400 mg / Nm3 or less. This will cause some calcium carbonate in the limestone to be unable to be fully converted into calcium sulfate, resulting in reduced gypsum quality. The reaction equation is as follows:

[0003] Sulfur dioxide reacts with calcium carbonate and water to produce calcium sulfite and carbon dioxide:

[0004] CaCO3+SO2+H2O→CaSO3·H2O+CO2

[0005] Calcium sulfite is then oxidized to calcium sulfate by oxygen in the air:

[0006] 2CaSO3□H2O+O2→2CaSO4·H2O

[0007] In the process of copper smelting flue gas acid production, a large amount of waste acid will be generated in the flue gas purification process. If these waste acids are discharged directly without treatment, they will cause serious pollution to the environment. They need to go through sulfide dearsenication-calcium carbonate deacidification-lime + iron salt dearsenicization and fluorine removal to meet the reuse standards. At the same time, a large amount of unreacted gypsum will be generated during the flue gas desulfurization process of the smelting process. Using this gypsum in the waste acid neutralization link can not only completely react calcium carbonate and improve product quality, but also reduce about 1 / 3 of the consumption of limestone powder specifically used for waste acid. The reaction equation is as follows:

[0008] CaCa3+H2So4→CaSO4↓+H2O+Co2↑

[0009] Calcium carbonate + sulfuric acid - calcium sulfate + carbon dioxide and water.

[0010] In the process of flue gas desulfurization in copper smelting ring, the commonly used treatment methods are as follows:

[0011] In the calcium carbonate desulfurization method, limestone powder is prepared into an emulsion and reacted with the flue gas by spraying, and then the gypsum is generated through oxidation reaction. The advantages of limestone desulfurization are low price, wide application range and fast reaction speed. The disadvantage is that in actual operation, due to the influence of various factors such as reaction conditions, reaction time, and limestone particle size, the reaction often cannot achieve complete conversion. Therefore, there will be a large amount of unreacted limestone remaining, the reaction is not thorough, and the gypsum quality is low. Summary of the invention

[0012] The purpose of the present invention is to provide a method for improving the quality of copper smelting ring gypsum in order to solve the above problems.

[0013] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0014] The present invention provides a method for improving the quality of copper smelting ring-collected gypsum, comprising the following steps:

[0015] Recovery of cyclohexane gypsum: Collect the unreacted cyclohexane gypsum, put it into the mixing bin, stir it at 30-50r / min for 5-20min, and store it at a constant temperature of 30℃ for later use;

[0016] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0017] Preparation of dispersant: (i) harvest 3-5 year old aloe vera, remove roots and epidermis to obtain aloe vera pulp; (ii) immerse the aloe vera pulp in a modified solution, take it out after 40-60 minutes, dry it, stop drying when the internal moisture reaches 20%-35%, crush it, take a particle size of 0.1-0.3mm, and obtain aloe vera particles; (iii) wrap the color powder in the aloe vera particles, granulate it, and obtain aloe vera pills.

[0018] Slurry preparation: mixing the pretreated gypsum, limestone powder and water to prepare slurry;

[0019] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2m / s, control the temperature at 45-50°C, the time at 1h-2h, the speed at 60-100r / min, and the reaction end point PH: 1-2 to obtain the deacidified slurry;

[0020] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0021] As a further optimization scheme of the present invention, the ring-forming gypsum is composed of calcium sulfate and calcium carbonate.

[0022] As a further optimization scheme of the present invention, the mass ratio of the anthracite, limestone powder and water is 1:1:50.

[0023] As a further optimization scheme of the present invention, the preparation process of the modified solution is: silver ion solution, phosphate, aluminum powder, chitosan and talcum powder are mixed, stirred at 60-90r / min for 20-45min, then 75% ethanol solution is added and soaked for 45-60min, and then 3 times the volume of pure water is added to obtain a modified solution.

[0024] As a further optimization scheme of the present invention, the raw materials for preparing the modified solution include, by weight: 5-10 parts of silver ion solution, 2-5 parts of phosphate, 20-25 parts of aluminum powder, 6-12 parts of chitosan, 15-20 parts of talc and 40-60 parts of 75% ethanol solution.

[0025] As a further optimization scheme of the present invention, the mass ratio of the aloe vera particles to the color powder is 2:1.

[0026] As a further optimization scheme of the present invention, the toner uses red iron oxide and green iron oxide, and the mass ratio of the red iron oxide to the green iron oxide is 1:1.

[0027] As a further optimization scheme of the present invention, the mass ratio of the slurry to the arsenic removal waste acid is 3g / L slurry: 30g / L arsenic removal waste acid

[0028] The beneficial effect of the present invention is that by reusing the incompletely reacted cyclohexane gypsum as a deacidifying agent, not only the generation of waste is reduced, but also the recycling of cyclohexane gypsum is promoted. In this process, the physical and chemical properties of cyclohexane gypsum are optimized, thereby improving its quality, and the gypsum content reaches 99%. The treated cyclohexane gypsum has better stability and reactivity, making it perform better in various industrial applications;

[0029] The key step in the invention is to use cyclohexane gypsum as a substitute for calcium carbonate in the neutralization reaction during the deacidification process of waste acid. This innovative method reduces the amount of calcium carbonate used by 30%, thereby reducing the cost of raw materials. DETAILED DESCRIPTION

[0030] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Material

[0032] Unless otherwise specified, the methods used in the present invention are conventional methods known to those skilled in the art, and the reagents and other materials used are commercially available products unless otherwise specified.

[0033] Example 1

[0034] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 30r / min for 5min, and store at a constant temperature of 30℃ for later use;

[0035] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0036] The preparation process of the modified solution is as follows: 5 parts of silver ion solution, 2 parts of phosphate, 20 parts of aluminum powder, 6 parts of chitin and 15 parts of talcum powder are mixed, stirred at 60r / min for 20min, then 40 parts of 75% ethanol solution are added and soaked for 45min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0037] Preparation of dispersant: (i) harvesting three-year-old aloe vera, removing the roots and epidermis to obtain aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 40 minutes, drying it, stopping the drying when the internal moisture reaches 20%, crushing it, taking a particle size of 0.1 mm, and obtaining aloe vera particles; (iii) wrapping the color powder in the aloe vera particles, granulating it, and obtaining aloe vera pills (the mass ratio of aloe vera particles to color powder is 2:1, and the color powder uses iron oxide red and iron oxide green, and the mass ratio of iron oxide red and iron oxide green is 1:1);

[0038] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0039] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 45°C, the time for 1 h, the speed at 60 r / min, and the reaction end point PH: 1 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0040] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0041] Example 2

[0042] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 45r / min for 15min, and store at a constant temperature of 30℃ for later use;

[0043] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0044] The preparation process of the modified solution is as follows: 8 parts of silver ion solution, 3 parts of phosphate, 22 parts of aluminum powder, 10 parts of chitosan and 18 parts of talcum powder are mixed, stirred at 80r / min for 30min, then 55 parts of 75% ethanol solution are added and soaked for 50min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0045] Preparation of dispersant: (i) harvesting 5-year-old aloe vera, removing the roots and epidermis to obtain aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 50 minutes, drying it, stopping the drying when the internal moisture reaches 30%, crushing it, taking a particle size of 0.2 mm, and obtaining aloe vera particles; (iii) wrapping the color powder in the aloe vera particles, granulating it, and obtaining aloe vera pills (the mass ratio of aloe vera particles to color powder is 2:1, and the color powder uses iron oxide red and iron oxide green, and the mass ratio of iron oxide red and iron oxide green is 1:1);

[0046] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0047] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 48°C, the time for 1.5 h, the speed at 80 r / min, and the reaction end point PH: 2 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0048] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0049] Example 3

[0050] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 50r / min for 20min, and store at a constant temperature of 30℃ for later use;

[0051] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0052] The preparation process of the modified solution is as follows: 10 parts of silver ion solution, 5 parts of phosphate, 25 parts of aluminum powder, 12 parts of chitosan and 20 parts of talcum powder are mixed, stirred at 90r / min for 45min, then 60 parts of 75% ethanol solution are added and soaked for 60min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0053] Preparation of dispersant: (i) harvesting 5-year-old aloe vera, removing the roots and epidermis to obtain aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 60 minutes, drying it, stopping the drying when the internal moisture reaches 35%, crushing it, taking a particle size of 0.3 mm, and obtaining aloe vera particles; (iii) wrapping the color powder in the aloe vera particles, granulating it, and obtaining aloe vera pills (the mass ratio of aloe vera particles to color powder is 2:1, and the color powder uses iron oxide red and iron oxide green, and the mass ratio of iron oxide red and iron oxide green is 1:1);

[0054] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0055] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 50°C, the time for 2 hours, the speed at 100 r / min, and the reaction end point PH: 2 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0056] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0057] Comparative Example 1

[0058] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 45r / min for 15min, and store at a constant temperature of 30℃ for later use;

[0059] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0060] The preparation process of the modified solution is as follows: 11 parts of phosphate, 22 parts of aluminum powder, 10 parts of chitosan and 18 parts of talcum powder are mixed, stirred at 80r / min for 30min, then 55 parts of 75% ethanol solution are added and soaked for 50min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0061] Preparation of dispersant: (i) harvesting 5-year-old aloe vera, removing the roots and epidermis to obtain aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 50 minutes, drying it, stopping the drying when the internal moisture reaches 30%, crushing it, taking a particle size of 0.2 mm, and obtaining aloe vera particles; (iii) wrapping the color powder in the aloe vera particles, granulating it, and obtaining aloe vera pills (the mass ratio of aloe vera particles to color powder is 2:1, and the color powder uses iron oxide red and iron oxide green, and the mass ratio of iron oxide red and iron oxide green is 1:1);

[0062] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0063] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 48°C, the time for 1.5 h, the speed at 80 r / min, and the reaction end point PH: 2 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0064] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0065] Comparative Example 2

[0066] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 45r / min for 15min, and store at a constant temperature of 30℃ for later use;

[0067] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0068] The preparation process of the modified solution is as follows: 11 parts of silver ion solution, 22 parts of aluminum powder, 10 parts of chitosan and 18 parts of talcum powder are mixed, stirred at 80r / min for 30min, then 55 parts of 75% ethanol solution are added and soaked for 50min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0069] Preparation of dispersant: (i) harvesting 5-year-old aloe vera, removing the roots and epidermis to obtain aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 50 minutes, drying it, stopping the drying when the internal moisture reaches 30%, crushing it, taking a particle size of 0.2 mm, and obtaining aloe vera particles; (iii) wrapping the color powder in the aloe vera particles, granulating it, and obtaining aloe vera pills (the mass ratio of aloe vera particles to color powder is 2:1, and the color powder uses iron oxide red and iron oxide green, and the mass ratio of iron oxide red and iron oxide green is 1:1);

[0070] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0071] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 48°C, the time for 1.5 h, the speed at 80 r / min, and the reaction end point PH: 2 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0072] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0073] Comparative Example 3

[0074] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 45r / min for 15min, and store at a constant temperature of 30℃ for later use;

[0075] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0076] The preparation process of the modified solution is as follows: 8 parts of silver ion solution, 3 parts of phosphate, 22 parts of aluminum powder, 10 parts of chitin and 18 parts of talcum powder are mixed, stirred at 80r / min for 30min, then 55 parts of deionized water are added to soak for 50min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0077] Preparation of dispersant: (i) harvesting 5-year-old aloe vera, removing the roots and epidermis to obtain aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 50 minutes, drying it, stopping the drying when the internal moisture reaches 30%, crushing it, taking a particle size of 0.2 mm, and obtaining aloe vera particles; (iii) wrapping the color powder in the aloe vera particles, granulating it, and obtaining aloe vera pills (the mass ratio of aloe vera particles to color powder is 2:1, and the color powder uses iron oxide red and iron oxide green, and the mass ratio of iron oxide red and iron oxide green is 1:1);

[0078] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0079] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 48°C, the time for 1.5 h, the speed at 80 r / min, and the reaction end point PH: 2 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0080] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0081] Comparative Example 4

[0082] Recovery of gypsum: Collect the unreacted gypsum, put it into a mixing bin (gypsum is composed of calcium sulfate and calcium carbonate), stir at 45r / min for 15min, and store at a constant temperature of 30℃ for later use;

[0083] Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use;

[0084] The preparation process of the modified solution is as follows: 11 parts of silver ion solution, 22 parts of aluminum powder, 10 parts of chitosan and 18 parts of talcum powder are mixed, stirred at 80r / min for 30min, then 55 parts of 75% ethanol solution are added and soaked for 50min, and then 3 times the volume of pure water is added to obtain the modified solution.

[0085] Preparation of dispersant: (i) harvesting 5-year-old aloe vera, removing the roots and epidermis, and obtaining aloe vera pulp; (ii) immersing the aloe vera pulp in a modified solution, taking it out after 50 minutes, and drying it. When the internal moisture content reaches 30%, the drying is stopped, and the aloe vera pulp is crushed to obtain a particle size of 0.2 mm to obtain aloe vera particles;

[0086] Slurry preparation: the pretreated gypsum, limestone powder and water are mixed to prepare slurry (the mass ratio of gypsum, limestone powder and water is 1:1:50);

[0087] Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2 m / s, control the temperature at 48°C, the time for 1.5 h, the speed at 80 r / min, and the reaction end point PH: 2 to obtain the deacidified slurry (3 g / L slurry: 30 g / L dearsenicating waste acid);

[0088] Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

[0089] Performance Testing

[0090] 1. Prepare the specimen according to 4.3 of GB / T17669.3-1999, store the specimen according to 4.4, and then measure the flexural strength and compressive strength of the specimen 2 hours after contact with water according to Chapters 5 and 6 respectively.

[0091] The test results are shown in the table below:

[0092] project 2h flexural strength 2h compressive strength Example 1 3.1MPa 6.1MPa Example 2 3.5MPa 6.5MPa Example 3 3.0MPa 6.5MPa Comparative Example 1 2.8MPa 5.3MPa Comparative Example 2 2.4MPa 5.4MPa Comparative Example 3 2.3MPa 5.1MPa Comparative Example 4 2.3MPa 5.0MPa

[0093] It can be seen from the above table that the flexural strength and compressive strength of the test pieces of the ring-forming gypsum prepared by the methods of Examples 1-3 after 2 hours of water contact are better than those of the ring-forming gypsum prepared by the methods of Comparative Examples 1-4. It can be imagined that adding modified aloe vera pills in the preparation process of the ring-forming gypsum can increase the flexural strength and compressive strength of the ring-forming gypsum;

[0094] The use of aloe vera particles to wrap the color powder is to make it easier for workers to observe the degree of mixing of the materials. When the color of the material changes to light yellow, it proves that the materials are completely mixed, preventing uneven mixing and thus improving the quality of the gypsum.

[0095] 2. Mix the Huanji gypsum with water at a ratio of 1:1.5; place the mixed material in a container with a depth of 30 cm and a radius of 10 cm, and observe it through the observation window; place a 0.5 kg solid iron ball 45 cm from the surface of the Huanji gypsum, and let the iron ball fall naturally; test the falling depth of the iron ball at the 10th, 30th and 45th minutes of the curing of the Huanji gypsum.

[0096] The test results are shown in the table below.

[0097] project 10th minute 30 min 45min Example 2 6cm 4cm 2cm Comparative Example 1 9cm 7cm 5cm Blank Group 10cm 9cm 7cm

[0098] It can be seen from the above table that the ring-forming gypsum prepared by the method of Example 2 has a shorter curing time and is easier to cure. In actual use, the required waiting time is shorter, which increases work efficiency.

[0099] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for improving the quality of copper smelting ring gypsum, characterized in that: The following steps are involved: Recovery of cyclohexane gypsum: Collect the unreacted cyclohexane gypsum, put it into the mixing bin, stir it at 30-50r / min for 5-20min, and store it at a constant temperature of 30℃ for later use; Pretreatment of ring-forming gypsum: Dehydrate, crush and grind the recycled ring-forming gypsum for later use; Preparation of dispersant: (i) harvest 3-5 year old aloe vera, remove roots and epidermis to obtain aloe vera pulp; (ii) immerse the aloe vera pulp in a modified solution, take it out after 40-60 minutes, dry it, stop drying when the internal moisture reaches 20%-35%, crush it, take a particle size of 0.1-0.3mm, and obtain aloe vera particles; (iii) wrap the color powder in the aloe vera particles, granulate it, and obtain aloe vera pills. Slurry preparation: mixing the pretreated gypsum, limestone powder and water to prepare slurry; Deacidification reaction: add the prepared slurry to the dearsenicating waste acid at a uniform speed of 0.2m / s, control the temperature at 45-50°C, the time at 1h-2h, the speed at 60-100r / min, and the reaction end point PH: 1-2 to obtain the deacidified slurry; Product processing: the deacidified slurry is subjected to water separation and drying to obtain fully reacted cyclohexane gypsum.

2. A method for improving the quality of copper smelting ring gypsum according to claim 1, characterized in that: The ring-forming gypsum is composed of calcium sulfate and calcium carbonate.

3. A method for improving the quality of copper smelting ring gypsum according to claim 1, characterized in that: The mass ratio of the ring-set gypsum, limestone powder and water is 1:1:

50.

4. A method for improving the quality of copper smelting ring-collected gypsum according to claim 1, characterized in that: The preparation process of the modified solution is: silver ion solution, phosphate, aluminum powder, chitin and talcum powder are mixed, stirred at 60-90r / min for 20-45min, then 75% ethanol solution is added to soak for 45-60min, and then 3 times the volume of pure water is added to obtain the modified solution.

5. A method for improving the quality of copper smelting ring-collected gypsum according to claim 4, characterized in that: The raw materials for preparing the modified solution include, by weight: 5-10 parts of silver ion solution, 2-5 parts of phosphate, 20-25 parts of aluminum powder, 6-12 parts of chitosan, 15-20 parts of talc and 40-60 parts of 75% ethanol solution.

6. A method for improving the quality of copper smelting ring-collected gypsum according to claim 1, characterized in that: The mass ratio of the aloe vera particles to the color powder is 2:

1.

7. A method for improving the quality of copper smelting ring-collected gypsum according to claim 1, characterized in that: The toner uses red iron oxide and green iron oxide, and the mass ratio of the red iron oxide to the green iron oxide is 1:

1.

8. The method for improving the quality of copper smelting ring-collected gypsum according to claim 1, characterized in that: The mass ratio of the slurry to the arsenic removal waste acid is 3g / L slurry: 30g / L arsenic removal waste acid.