Flotation reagent for rutile beneficiation and beneficiation method thereof

Abstract

The invention discloses a flotation reagent for rutile beneficiation and a beneficiation method thereof. The flotation reagent comprises a component A and a component B, the component A is used for roughing rutile and consists of the following substances in parts by weight: 60-80 parts of a collecting agent, 20-40 parts of a foaming agent, 2-6 parts of a pH value regulator, 0.5-1.5 parts of an activating agent and 1-5 parts of a flocculating agent; and the component B is used for fine selection of rutile and comprises the following substances in parts by weight: 60-80 parts of a collecting agent, 1-5 parts of an activating agent and 20-40 parts of a foaming agent. The flotation reagent is used for rutile ore dressing, high-grade rutile can be obtained from low-grade rutile ore raw materials, and the recovery rate is high. In the components, the dialkyl thiocarbonyl carbamate and the styrene phosphoric acid serve as composite collecting agents, the phosphoric acid propane diamine and the allyl glycidyl ether serve as composite activating agents, and synergistic interaction is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of ore dressing, and in particular relates to a flotation agent for rutile ore dressing and an ore dressing method thereof. Background Art

[0002] Rutile is an important titanium-containing mineral, mainly composed of titanium dioxide (TiO2), and is an important raw material for refining titanium. Rutile deposits are widely distributed around the world, mainly concentrated in Australia, South Africa and India. In China, rutile resources are also relatively abundant, and the mineralization geological ages are mainly Pre-Sinian, Ordovician and Quaternary. The formation mechanism of rutile deposits is complex and diverse. For example, the rutile mine in Dai County, Shanxi Province, China was formed by basic rocks altered by seawater hydrothermal fluids and then metamorphic in the medium- and high-pressure amphibolite phase. In addition, rutile can also be produced in gneiss, pegmatite, eclogite and placer.

[0003] China's rutile deposits are distributed in many provinces, such as Hubei Province and Jiangsu Province. Among them, the rutile reserves in Donghai County, Jiangsu Province are relatively large. After detailed investigation, the rutile reserves that can be put on the balance sheet are 5.0749 million tons, with an average grade of 3.39%. Rutile beneficiation technology is also an important part of its development. Currently, the commonly used beneficiation methods include gravity separation and magnetic separation. However, my country's rutile ore has the characteristics of "poor, fine and mixed", and it is difficult to obtain rutile concentrate with high grade and recovery rate with a single beneficiation process.

[0004] The flotation reagents for flotation of rutile generally include collectors, frothers, activators, etc. The existing flotation reagent formulas have poor flotation effects on low-grade rutile ores or raw materials containing a large number of associated mineral veins, and there are problems such as poor product grade and low recovery rate after flotation. Summary of the invention

[0005] The object of the present invention is to provide a flotation agent for rutile ore dressing and a ore dressing method thereof.

[0006] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0007] The component A is used for rough separation of rutile and is composed of the following substances in parts by weight: 60-80 parts of collector, 20-40 parts of foaming agent, 2-6 parts of pH adjuster, 0.5-1.5 parts of activator, and 1-5 parts of flocculant;

[0008] The B component is used for rutile concentration and is composed of the following materials in parts by weight: 60-80 parts of collector, 1-5 parts of activator, and 20-40 parts of foaming agent.

[0009] The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:1.

[0010] The foaming agent is one or more of propylene glycol, n-octanol, cyclohexanol, sodium fatty acid methyl ester sulfonate, sodium petroleum sulfonate, sodium α-olefin sulfonate, and diethyl adipate.

[0011] The pH adjuster is one or more of sodium carbonate, calcium carbonate and sodium hydroxide.

[0012] The activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:1.

[0013] The flocculant is one or more of sodium lignin sulfonate, tannin, polyamino acid and sodium polyphosphate.

[0014] The polyamino acid is polyaspartic acid, polyproline, polyglycine or polyserine.

[0015] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0016] (1) Roughing: crush the rutile-containing ore, add water to grind the ore to obtain slurry, add 0.1-1.2% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0017] (2) Sweeping: Add 0.05-0.5% of component B to the coarse tailings and stir evenly;

[0018] (3) Concentration: Add 0.01-0.1% sodium hexametaphosphate to the coarse concentrate and stir evenly.

[0019] The grinding is carried out using a grinding machine, and the mass fraction of the minerals in the ore pulp is 20-45%.

[0020] The step (2) is repeated 1-3 times, and the step (3) is repeated 1-3 times.

[0021] Beneficial effects of the present invention: The flotation reagent of the present invention comprises component A and component B, and is used for rutile beneficiation, and can obtain high-grade rutile from low-grade rutile ore or raw materials containing more associated mineral veins, and has a high recovery rate. In the components, dialkylthiocarbamate and styrene phosphoric acid are used as composite collectors, and propylene diamine phosphate and acryl glycidyl ether are used as composite activators, which synergize and enhance the effect. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] Example 1

[0024] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0025] The component A is used for rough separation of rutile and is composed of the following materials in parts by weight: 70 parts of collector, 30 parts of propylene glycol, 4 parts of sodium carbonate, 1 part of activator, and 3 parts of sodium lignin sulfonate;

[0026] The B component is used for rutile selection and is composed of the following materials in parts by weight: 70 parts of collector, 3 parts of activator, and 30 parts of propylene glycol;

[0027] The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:1; the activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:1.

[0028] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0029] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 30%) to obtain slurry, add 0.6% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0030] (2) Sweeping: Add 0.1% B component to the coarse tailings and stir evenly; repeat the sweeping twice;

[0031] (3) Concentration: Add 0.05% sodium hexametaphosphate to the coarse concentrate, stir evenly, and repeat the concentrating process twice.

[0032] Example 2

[0033] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0034] The component A is used for rough separation of rutile and is composed of the following materials in parts by weight: 60 parts of collector, 20 parts of n-octanol, 2 parts of sodium hydroxide, 0.8 parts of activator, and 2 parts of tannin;

[0035] The B component is used for rutile selection and is composed of the following materials in parts by weight: 60 parts of collector, 2 parts of activator, and 20 parts of n-octanol;

[0036] The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:1; the activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:1.

[0037] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0038] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 25%) to obtain slurry, add 0.2% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0039] (2) Scavenging: Add 0.05% of component B to the coarse tailings and stir evenly; repeat the scavenging 3 times;

[0040] (3) Concentration: Add 0.01% sodium hexametaphosphate to the coarse concentrate and stir evenly; repeat the concentrating process 3 times.

[0041] Example 3

[0042] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0043] The component A is used for rough separation of rutile and is composed of the following materials in parts by weight: 80 parts of collector, 40 parts of sodium fatty acid methyl ester sulfonate, 6 parts of calcium carbonate, 1.5 parts of activator, and 5 parts of polyaspartic acid;

[0044] The B component is used for rutile selection and is composed of the following materials in parts by weight: 80 parts of collector, 5 parts of activator, and 40 parts of sodium fatty acid methyl ester sulfonate;

[0045] The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:1; the activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:1.

[0046] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0047] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 38%) to obtain slurry, add 0.7% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0048] (2) Sweeping: Add 0.3% B component to the coarse tailings and stir evenly;

[0049] (3) Concentration: Add 0.08% sodium hexametaphosphate to the coarse concentrate and stir evenly.

[0050] Comparative Example 1

[0051] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0052] The component A is used for rough separation of rutile and is composed of the following substances in parts by weight: 70 parts of dialkylthiocarbamate, 30 parts of propylene glycol, 4 parts of sodium carbonate, 1 part of activator, and 3 parts of sodium lignin sulfonate;

[0053] The B component is used for rutile selection and is composed of the following materials in parts by weight: 70 parts of collector, 3 parts of activator, and 30 parts of propylene glycol;

[0054] The activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:1.

[0055] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0056] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 30%) to obtain slurry, add 0.6% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0057] (2) Sweeping: Add 0.1% B component to the coarse tailings and stir evenly; repeat the sweeping twice;

[0058] (3) Concentration: Add 0.05% sodium hexametaphosphate to the coarse concentrate, stir evenly, and repeat the concentrating process twice.

[0059] Comparative Example 2

[0060] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0061] The component A is used for rough selection of rutile and is composed of the following substances in parts by weight: 70 parts of styrene phosphoric acid, 30 parts of propylene glycol, 4 parts of sodium carbonate, 1 part of activator, and 3 parts of sodium lignin sulfonate;

[0062] The B component is used for rutile selection and is composed of the following materials in parts by weight: 70 parts of collector, 3 parts of activator, and 30 parts of propylene glycol;

[0063] The activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:1.

[0064] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0065] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 30%) to obtain slurry, add 0.6% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0066] (2) Sweeping: Add 0.1% B component to the coarse tailings and stir evenly; repeat the sweeping twice;

[0067] (3) Concentration: Add 0.05% sodium hexametaphosphate to the coarse concentrate, stir evenly, and repeat the concentrating process twice.

[0068] Comparative Example 3

[0069] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0070] The component A is used for rough separation of rutile and is composed of the following materials in parts by weight: 70 parts of collector, 30 parts of propylene glycol, 4 parts of sodium carbonate, 1 part of activator, and 3 parts of sodium lignin sulfonate;

[0071] The B component is used for rutile selection and is composed of the following materials in parts by weight: 70 parts of propylene diamine phosphate, 3 parts of activator, and 30 parts of propylene glycol;

[0072] The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:1.

[0073] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0074] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 30%) to obtain slurry, add 0.6% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0075] (2) Sweeping: Add 0.1% B component to the coarse tailings and stir evenly; repeat the sweeping twice;

[0076] (3) Concentration: Add 0.05% sodium hexametaphosphate to the coarse concentrate, stir evenly, and repeat the concentrating process twice.

[0077] Comparative Example 4

[0078] A flotation reagent for rutile ore dressing, comprising component A and component B;

[0079] The component A is used for rough separation of rutile and is composed of the following materials in parts by weight: 70 parts of collector, 30 parts of propylene glycol, 4 parts of sodium carbonate, 1 part of activator, and 3 parts of sodium lignin sulfonate;

[0080] The B component is used for rutile selection and is composed of the following substances in parts by weight: 70 parts of propylene glycidyl ether, 3 parts of activator, and 30 parts of propylene glycol;

[0081] The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:1.

[0082] A ore dressing method using the flotation agent for rutile ore dressing is carried out according to the following steps:

[0083] (1) Roughing: crush the rutile-containing ore, add water and grind it in a ball mill (the mass fraction of the mineral in the slurry is 30%) to obtain slurry, add 0.6% of component A, and stir evenly to obtain coarse concentrate and coarse tailings;

[0084] (2) Sweeping: Add 0.1% B component to the coarse tailings and stir evenly; repeat the sweeping twice;

[0085] (3) Concentration: Add 0.05% sodium hexametaphosphate to the coarse concentrate, stir evenly, and repeat the concentrating process twice.

[0086] Experimental example:

[0087] According to the process parameters of Examples 1-3 and Comparative Examples 1-3, a closed-circuit test was carried out. Under the condition of a feed TiO2 grade of 3.5%, the grade of the final TiO2 product was determined and the recovery rate was calculated. Each group of experiments was repeated 3 times to take the average value, and statistical analysis was performed using SPSS24.0 software. The quantitative data results were used. (mean ± standard deviation), the Kolmogorov-Smirnov test was used for data normality test, and the t-test was used to compare the mean differences between the two groups for data that met the normal distribution, with P < 0.05 as the difference being statistically significant. The results are shown in Table 1:

[0088] Table 1

[0089]

[0090] Note: * represents P < 0.05 compared with the group in Example 1.

[0091] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. 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, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A flotation agent for rutile ore dressing, It is characterized in that It includes component A and component B; The component A is used for rough separation of rutile and is composed of the following substances in parts by weight: 60-80 parts of collector, 20-40 parts of foaming agent, 2-6 parts of pH adjuster, 0.5-1.5 parts of activator, and 1-5 parts of flocculant; The B component is used for rutile selection and is composed of the following materials in parts by weight: 60-80 parts of collector, 1-5 parts of activator, and 20-40 parts of foaming agent.

2. The flotation agent for rutile ore dressing according to claim 1, It is characterized in that The collector is a mixture of dialkylthiocarbamate and styrene phosphoric acid in a mass ratio of 2:

1.

3. The flotation agent for rutile ore dressing according to claim 1, It is characterized in that The foaming agent is one or more of propylene glycol, n-octanol, cyclohexanol, sodium fatty acid methyl ester sulfonate, sodium petroleum sulfonate, sodium α-olefin sulfonate, and diethyl adipate.

4. The flotation agent for rutile ore dressing according to claim 1, It is characterized in that The pH adjuster is one or more of sodium carbonate, calcium carbonate and sodium hydroxide.

5. The flotation agent for rutile ore dressing according to claim 1, It is characterized in that The activator is a mixture of propylene diamine phosphate and allyl glycidyl ether in a mass ratio of 1:

1.

6. The flotation agent for rutile ore dressing according to claim 1, It is characterized in that The flocculant is one or more of sodium lignin sulfonate, tannin, polyamino acid and sodium polyphosphate.

7. The flotation agent for rutile ore dressing according to claim 6, It is characterized in that The polyamino acid is polyaspartic acid, polyproline, polyglycine or polyserine.

8. A ore dressing method using the flotation agent for rutile ore dressing as claimed in claim 1, It is characterized in that Follow these steps: (1) Roughing: crush the rutile-containing ore, add water to grind the ore to obtain slurry, add 0.1-1.2% of component A, and stir evenly to obtain coarse concentrate and coarse tailings; (2) Sweeping: Add 0.05-0.5% of component B to the coarse tailings and stir evenly; (3) Concentration: Add 0.01-0.1% sodium hexametaphosphate to the coarse concentrate and stir evenly.

9. The ore dressing method using the flotation agent for rutile ore dressing according to claim 8, It is characterized in that The grinding is carried out using a grinding machine, and the mass fraction of the minerals in the ore pulp is 20-45%.

10. The ore dressing method using the flotation agent for rutile ore dressing according to claim 8, It is characterized in that The step (2) is repeated 1-3 times, and the step (3) is repeated 1-3 times.

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