High-efficiency multifunctional mud conditioner, preparation method and application thereof

Abstract

The present disclosure relates to a kind of efficient multifunctional mud conditioner and its preparation method and application.Efficient multifunctional mud conditioner includes long 10-15 long carbon chain zwitterionic surfactant;60-70 polyacrylamide;14-25 inorganic salt adjuvant;0.5-1.0 amino coupling agent.When using the efficient multifunctional mud conditioner of the present disclosure to wash ore, mineral mud filter pressing and sewage flocculation treatment of beneficiation, by long carbon chain zwitterionic surfactant compound polyacrylamide, inorganic salt adjuvant and amino coupling agent, under the premise of not changing existing filter equipment and process conditions, can reach the purpose of improving filter pressing filtration efficiency, reducing flocculation settling time, can effectively improve the washing and selecting production efficiency, to meet the requirement of mining industry to water treatment adjuvant.

Description

Technical Field

[0001] This disclosure relates to the field of water treatment additives technology, and more specifically to a highly efficient and multifunctional mud conditioner for mines in multiple industries, its preparation method and application. Background Technology

[0002] With the rapid development of the mining industry in many aspects, there is a greater demand for water conservation and the reuse of recycled water. Mineral washing and beneficiation processes in coal mines, iron mines, copper mines, aluminum mines, zinc mines, etc., all involve mineral slurry filtration and wastewater flocculation dewatering treatment.

[0003] Currently, various mineral slurry filtration and wastewater flocculation treatment processes require the addition of corresponding water treatment aids. Wastewater flocculation treatment mostly uses traditional flocculants such as high-molecular-weight polyacrylamide and polyaluminum chloride. Mineral slurry filtration also employs compound inorganic salts and polymers, as well as conventional short- and medium-chain nonionic and amphoteric surfactants, as filter aids. However, these methods have limited functionality, and their flocculation and filtration effects are far below the new industry demands, resulting in low washing and beneficiation efficiency and failing to meet the mining industry's requirements for water treatment aids. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a highly efficient and multifunctional mud conditioner, its preparation method, and its application.

[0005] According to a first aspect of the present disclosure, a high-efficiency multifunctional mud conditioner is provided, the high-efficiency multifunctional mud conditioner comprising the following raw materials and parts by weight:

[0006] 10-15 parts of long-chain zwitterionic surfactant;

[0007] 60-70 parts of polyacrylamide;

[0008] 14-25 parts of inorganic salt additives;

[0009] 0.5-1.0 parts of amino coupling agent,

[0010] The long-chain zwitterionic surfactant has 16-18 carbon atoms in its long chain.

[0011] In some possible embodiments, the long carbon chain in the long-chain zwitterionic surfactant is a straight-chain alkyl chain or a branched alkyl chain.

[0012] In some possible implementations, the polyacrylamide is anionic polyacrylamide or nonionic polyacrylamide.

[0013] In some possible implementations, the polyacrylamide has a molecular weight greater than or equal to 15 million.

[0014] In some possible implementations, the inorganic salt auxiliary is one or both of calcium chloride and magnesium chloride.

[0015] In some possible implementations, the inorganic salt auxiliary is aluminum sulfate.

[0016] In some possible implementations, the amino coupling agent is a mercaptoacetic acid-amined organic coupling agent.

[0017] According to a second aspect of the present disclosure, a method for preparing a high-efficiency multifunctional mud conditioner as described in any embodiment of the first aspect is provided. The preparation method includes: step S1: weighing 10-15 parts of a long-chain amphoteric surfactant, 60-70 parts of polyacrylamide, 14-25 parts of an inorganic salt additive, and 0.5-1.0 parts of an amino coupling agent for later use; step S2: adding the above-mentioned weight parts of the long-chain amphoteric surfactant and the inorganic salt additive to a mixing device and stirring until uniformly mixed to obtain a first mixture; and step S3: sequentially adding the above-mentioned weight parts of the polyacrylamide and the amino coupling agent, mixing with the first mixture and stirring until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0018] In some possible implementations, step S2 includes: step S21: adding the above-mentioned weight proportions of the long-chain amphoteric surfactant and the inorganic salt auxiliary to a mixing device for mixing; step S22: stirring and mixing the long-chain amphoteric surfactant and the inorganic salt auxiliary at room temperature and pressure for a stirring and mixing time of not less than 30 minutes to obtain a first mixture.

[0019] In some possible implementations, step S3 includes: step S31: adding the polyacrylamide and the amino coupling agent in the above-mentioned weight proportions to a mixing device in sequence, and mixing them with the first mixture; step S32: stirring and mixing the polyacrylamide, the amino coupling agent and the first mixture at room temperature and pressure for a stirring and mixing time of not less than 30 minutes to obtain a high-efficiency multifunctional mud conditioner.

[0020] In some possible implementations, the mixing device includes any one of a spiral mixer, a free-fall mixer, a forced stirring mixer, and a stirred tank.

[0021] According to a third aspect of the present disclosure, an efficient and multifunctional mud conditioner as described in any embodiment of the first aspect is provided for use in mud pressure filtration and wastewater flocculation dewatering during ore washing and beneficiation.

[0022] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The high-efficiency multifunctional mud conditioner of this disclosure includes a long-chain amphoteric surfactant, polyacrylamide, inorganic salt additives, and amino coupling agents. When the high-efficiency multifunctional mud conditioner of this disclosure is used for mineral mud pressure filtration and wastewater flocculation treatment in ore washing and beneficiation, the combination of the long-chain amphoteric surfactant with polyacrylamide, inorganic salt additives, and amino coupling agents can both change the dynamic potential between fine particles in the ore washing and beneficiation wastewater, thereby agglomerating them and enhancing the flocculation effect, and also change the interfacial tension between the fine particles and water in the ore washing and beneficiation wastewater, increasing the hydration repulsion. This enhances the filtration aid effect without affecting the flocculation effect, giving the high-efficiency multifunctional mud conditioner multiple functions of flocculation and filtration aid. Without changing the existing filtration equipment and process conditions, it can achieve the purpose of improving pressure filtration efficiency and reducing flocculation settling time, effectively improving the washing and beneficiation production efficiency, and thus meeting the requirements of the mining industry for water treatment additives.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0025] Figure 1 This is a flowchart illustrating a method for preparing a highly efficient and multifunctional mud conditioner according to an exemplary embodiment.

[0026] Figure 2 This is a flowchart illustrating a method for preparing a highly efficient and multifunctional mud conditioner according to an exemplary embodiment.

[0027] Figure 3 This is a flowchart illustrating a method for preparing a highly efficient and multifunctional mud conditioner according to an exemplary embodiment. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0029] With the rapid development of the mining industry in many aspects, there are higher expectations for water conservation and the reuse of recycled water. Mineral washing and beneficiation processes in coal mines, iron mines, copper mines, aluminum mines, zinc mines, etc., all involve mineral slurry filtration and wastewater flocculation dewatering treatment.

[0030] In the treatment of ore washing and beneficiation wastewater, the continuous reduction in particle size leads to increasingly significant hydration on the particle surfaces. The electrostatic repulsion between particles intensifies, resulting in the stable suspension of fine or micro-nano-scale particles in the wastewater. While commercially available products address these factors in ore washing and beneficiation wastewater with high suspended solids content and good stability, simply using inorganic salts (electrolytes) to reduce the interparticle potential and partially reduce hydration repulsion does not yield particularly significant results.

[0031] In related technologies, the mineral mud filtration and wastewater flocculation treatment processes require the addition of corresponding water treatment aids. Wastewater flocculation treatment mostly uses traditional flocculants such as high-molecular-weight polyacrylamide and polyaluminum chloride. The mineral mud filtration process also uses filter aids composed of inorganic salts and polymers. However, these methods are limited in function, resulting in unsatisfactory flocculation and filtration effects, leading to low washing and beneficiation efficiency and failing to meet the mining industry's requirements for water treatment aids.

[0032] In order to meet the current demand for water treatment additives in the mining industry, high-efficiency and multifunctional water treatment additives are constantly being improved.

[0033] To meet the current demand for water treatment additives in the mining industry, this disclosure provides a highly efficient and multifunctional mud conditioner.

[0034] In one embodiment of this disclosure, the high-efficiency multifunctional mud conditioner comprises the following raw materials and parts by weight:

[0035] 10-15 parts of long-chain zwitterionic surfactant;

[0036] 60-70 parts of polyacrylamide;

[0037] 14-25 parts of inorganic salt additives;

[0038] 0.5-1.0 parts of amino coupling agent.

[0039] The disclosed high-efficiency multifunctional mud conditioner comprises a long-chain zwitterionic surfactant, polyacrylamide, inorganic salt additives, and an amino coupling agent. When this high-efficiency multifunctional mud conditioner is used for mineral slurry pressure filtration and wastewater flocculation treatment in ore washing and beneficiation, the combination of the long-chain zwitterionic surfactant with polyacrylamide, inorganic salt additives, and an amino coupling agent can both alter the kinetic potential between fine particles in the ore washing and beneficiation wastewater, thereby enhancing flocculation, and also alter the interfacial tension between the fine particles and water in the ore washing and beneficiation wastewater, increasing hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, giving the high-efficiency multifunctional mud conditioner multiple functions of flocculation and filtration. Without changing existing filtration equipment and process conditions, it can improve pressure filtration efficiency and reduce flocculation settling time, effectively improving washing and beneficiation production efficiency and thus meeting the requirements of the mining industry for water treatment additives.

[0040] In one embodiment of this disclosure, the long-chain zwitterionic surfactant has 12-18 carbon atoms in its long-chain structure.

[0041] Among them, long-chain zwitterionic surfactants are substances with amphiphilic properties, that is, they have a "hydrophilic" head group and a "hydrophobic" tail.

[0042] As an example, a long-chain zwitterionic surfactant with 12 carbon atoms is used, combined with polyacrylamide, inorganic salt additives, and amino coupling agents. This can not only change the kinetic potential between fine particles in ore washing and beneficiation wastewater, thus agglomerating them and enhancing the flocculation effect, but also change the interfacial tension between fine particles and water in ore washing and beneficiation wastewater, increasing the hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration.

[0043] As another example, a long-chain zwitterionic surfactant with 14 carbon atoms is used, combined with polyacrylamide, inorganic salt additives and amino coupling agents. This can not only change the kinetic potential between fine particles in the washing and beneficiation wastewater, thus agglomerating them and enhancing the flocculation effect, but also change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration.

[0044] As another example, a long-chain zwitterionic surfactant with 16 carbon atoms is used, combined with polyacrylamide, inorganic salt additives and amino coupling agents. This can not only change the kinetic potential between fine particles in the washing and beneficiation wastewater, thus agglomerating them and enhancing the flocculation effect, but also change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration.

[0045] As another example, a long-chain zwitterionic surfactant with 18 carbon atoms is used, combined with polyacrylamide, inorganic salt additives and amino coupling agents. This can not only change the kinetic potential between fine particles in the washing and beneficiation wastewater, thus agglomerating them and enhancing the flocculation effect, but also change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration.

[0046] In this embodiment, the long-chain zwitterionic surfactant with 12-18 carbon atoms has a long-chain structure. These long chains can simultaneously adsorb multiple suspended particles, connecting them like bridges to form larger flocs. That is, fine particles in ore washing and beneficiation wastewater are bridged by the long-chain zwitterionic surfactant to form flocs. Further compounding with polyacrylamide, inorganic salt additives, and amino coupling agents not only alters the kinetic potential between fine particles in the ore washing and beneficiation wastewater, thus enhancing flocculation, but also changes the interfacial tension between the fine particles and water, increasing hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency, multi-functional mud conditioner possess multiple functions of flocculation and filtration.

[0047] In one embodiment of this disclosure, the long carbon chain in the long-chain zwitterionic surfactant is a straight-chain alkyl chain or a branched alkyl chain.

[0048] It should be noted that "straight-chain alkyl chain" refers to an alkyl chain without branches. "Branched-chain alkyl chain" refers to an alkyl chain with one or more branches, including alkyl chains with both straight-chain and branched portions.

[0049] For example, the long carbon chain in the long-chain zwitterionic surfactant is a straight-chain alkyl chain. The long carbon chain of the straight-chain alkyl chain can simultaneously adsorb multiple suspended particles, forming larger flocs. Further compounding with polyacrylamide, inorganic salt additives, and amino coupling agents works synergistically to alter the kinetic potential between fine particles in ore washing and beneficiation wastewater, thereby enhancing flocculation. It can also change the interfacial tension between fine particles and water in ore washing and beneficiation wastewater, increasing hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency, multifunctional mud conditioner possess multiple functions of flocculation and filtration.

[0050] For example, the long carbon chain in the long-chain zwitterionic surfactant is a branched alkyl chain. The long carbon chain of the branched alkyl chain can simultaneously adsorb multiple suspended particles, forming larger flocs. Further compounding with polyacrylamide, inorganic salt additives, and amino coupling agents works synergistically to alter the kinetic potential between fine particles in ore washing and beneficiation wastewater, thereby enhancing flocculation. It can also change the interfacial tension between fine particles and water in ore washing and beneficiation wastewater, increasing hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, making the high-efficiency, multifunctional mud conditioner possess multiple functions of flocculation and filtration.

[0051] In one embodiment of this disclosure, the long-chain zwitterionic surfactant is one or more of carboxylic acid betaine, sulfonic acid betaine, phosphate ester betaine, or amine oxide.

[0052] In carboxylic betaine molecules, the anion is a carboxyl group, and the cation is a quaternary ammonium group. In acidic media, when the isoelectric point is lower than the pH, carboxylic betaine behaves as a water-soluble cationic surfactant. In neutral or alkaline media, i.e., at the same or higher pH as the isoelectric point, carboxylic betaine behaves as a water-soluble amphoteric surfactant, and not as an anionic surfactant. Amphoteric surfactants only readily precipitate with anionic surfactants in acidic media. Carboxylic betaine can be used in combination with any type of surfactant in media of various pH values.

[0053] The anionic sulfonate group in sulfonic acid betaine molecules is sulfonyl, and the cationic group is quaternary ammonium. Because sulfonic acid betaine contains both anionic and cationic hydroxyl groups in its structure, it not only possesses all the advantages of amphoteric surfactants, but also exhibits resistance to high concentrations of acids, alkalis, and salts, good emulsifying, dispersing, and antistatic properties, as well as bactericidal, antifungal, and viscoelastic properties.

[0054] Phosphate-type betaine molecules contain anionic phosphate groups and cations of quaternary ammonium groups. Phosphate-type betaine not only possesses the excellent wetting, detergency, solubilizing, emulsifying, dispersing, antistatic, and thermal stability of amphoteric surfactants, as well as good compatibility, low irritation, and superior alkali resistance, electrolyte resistance, and antistatic properties, but also exhibits strong calcium soap dispersibility, low surface tension, and excellent foaming performance.

[0055] The oxygen in amine oxide molecules carries a relatively large negative charge and can combine with hydrogen protons, making it a weak base, although weaker than the parent tertiary amine. This weak base nature causes amine oxides to exhibit nonionic properties in neutral and alkaline solutions, and cationic properties in acidic media.

[0056] In the embodiments of this disclosure, a long-chain zwitterionic surfactant with 12-18 carbon atoms is used in combination with polyacrylamide, inorganic salts and amino coupling agents to synergistically play multiple roles of flocculation and filtration aid in the treatment of ore washing and beneficiation wastewater.

[0057] In one embodiment of this disclosure, the alkyl chain of carboxylic acid betaine has 12 to 18 carbon atoms, and the general chemical structural formula of carboxylic acid betaine is:

[0058]

[0059] In the formula: R=C n H (2n+1) , n=12-18.

[0060] In this embodiment, carboxylic acid betaine with an alkyl chain carbon number of 12 to 18 is used. This configuration can reduce the kinetic potential between fine particles in the washing and beneficiation wastewater, enhance the flocculation effect, and change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion and the filtration speed without affecting the balance of oleophilic and hydrophilic values. At the same time, it makes larger gaps between the fine particles in the washing and beneficiation wastewater, improving the looseness of the fine particle stack, thereby reducing the moisture content of the filter cake. It enhances the filtration aid effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration aid.

[0061] In one embodiment of this disclosure, the alkyl chain of sulfonic acid betaine has 12 to 18 carbon atoms, and the general chemical structural formula of sulfonic acid betaine is:

[0062]

[0063] In the formula: R=C n H (2n+1) , n=12-18.

[0064] In this embodiment, a sulfonic acid betaine with an alkyl chain carbon number of 12-18 is used. This configuration can reduce the kinetic potential between fine particles in the washing and beneficiation wastewater, enhance the flocculation effect, and change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion and the filtration speed without affecting the balance of oleophilic and hydrophilic values. At the same time, it makes larger gaps between the fine particles in the washing and beneficiation wastewater, improving the looseness of the fine particle stack, thereby reducing the moisture content of the filter cake. It enhances the filtration aid effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration aid.

[0065] In one embodiment of this disclosure, the alkyl chain of the phosphate betaine has 12 to 18 carbon atoms, and the general chemical structural formula of the phosphate betaine is:

[0066]

[0067] In the formula: R=C n H (2n+1) , n=12-18.

[0068] In this embodiment, a phosphate ester betaine with an alkyl chain carbon number of 12-18 is used. This configuration can reduce the kinetic potential between fine particles in the washing and beneficiation wastewater, enhance the flocculation effect, and change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion and the filtration speed without affecting the balance of oleophilic and hydrophilic values. At the same time, it makes larger gaps between the fine particles in the washing and beneficiation wastewater, improving the looseness of the fine particle stack, thereby reducing the moisture content of the filter cake. It enhances the filtration aid effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration aid.

[0069] In one embodiment of this disclosure, the alkyl chain of the amine oxide has 12 to 18 carbon atoms, and the general chemical structural formula of the amine oxide is:

[0070]

[0071] In the formula: R=C n H (2n+1) n=12-18, R1 and R2 are CH3 or CH3CH2OH.

[0072] In this embodiment, amine oxides with alkyl chains having 12-18 carbon atoms are used. This configuration can reduce the kinetic potential between fine particles in the washing and beneficiation wastewater, enhancing the flocculation effect. It can also change the interfacial tension between the fine particles and water in the washing and beneficiation wastewater, increasing the hydration repulsion and improving the filtration speed without affecting the balance of oleophilic and hydrophilic values. At the same time, it allows larger gaps to form between the fine particles in the washing and beneficiation wastewater, improving the looseness of the fine particle stack and thus reducing the moisture content of the filter cake. This enhances the filtration aid effect without affecting the flocculation effect, making the high-efficiency multifunctional mud conditioner have multiple functions of flocculation and filtration aid.

[0073] In one embodiment of this disclosure, the polyacrylamide is anionic polyacrylamide or nonionic polyacrylamide.

[0074] Polyacrylamide (PAM) is a water-soluble polymer with excellent flocculation properties, which can reduce frictional resistance between liquids. Based on its ionic characteristics, polyacrylamide can be classified into four types: nonionic, anionic, cationic, and amphoteric. Its application in flocculation is related to the type and surface properties of the flocculated material, particularly its zeta potential, viscosity, turbidity, and pH of the suspension. The zeta potential of the particle surface is the cause of particle aggregation inhibition; adding polyacrylamide (PAM), with its opposite surface charge, can reduce the zeta potential and promote aggregation.

[0075] In this embodiment of the invention, by using anionic or nonionic polyacrylamide, in combination with long-chain zwitterionic surfactants, inorganic salt additives and amino coupling agents, the kinetic potential between particles in the washing and beneficiation wastewater can be reduced and aggregated, thereby enhancing the flocculation effect, changing the interfacial tension between particles and water in the washing and beneficiation wastewater, increasing the water repulsion force, and significantly improving the filtration effect without affecting the flocculation.

[0076] In one embodiment of this disclosure, the molecular weight of the polyacrylamide is greater than or equal to 15 million.

[0077] Understandably, the higher the molecular weight of polyacrylamide, the stronger its flocculation ability. A molecular weight below 15 million will result in substandard flocculation ability.

[0078] In this embodiment, the molecular weight of the polyacrylamide is greater than or equal to 15 million. This setting is due to two reasons: firstly, the higher the molecular weight of the polyacrylamide, the higher its cost; secondly, if the flocculation ability of the polyacrylamide is too strong, it will flocculate the inorganic salt additives as well, rendering the inorganic salt additives ineffective and thus affecting their synergistic effect.

[0079] In one embodiment of this disclosure, the inorganic salt additive is one or both of calcium chloride and magnesium chloride.

[0080] It should be noted that the addition of inorganic salt additives is mainly to reduce costs and avoid increasing costs due to the excessively large molecular weight of polyacrylamide.

[0081] Due to the presence of long-chain zwitterionic surfactants, chloride ions can only appear simultaneously with divalent cations to avoid changing the interfacial tension between the solid and liquid, thus preventing disruption of the balance between lipophilic and hydrophilic values.

[0082] In this embodiment, the inorganic salt additive is calcium chloride, magnesium chloride, or a combination of calcium chloride and magnesium chloride. This combination can work synergistically with polyacrylamide and long-chain zwitterionic surfactants to reduce the potential between fine particles in ore washing and beneficiation wastewater, reduce hydration repulsion, break down or weaken the hydration effect on the particle surface and enhance the bridging mechanism, and also reduce costs.

[0083] In one embodiment of this disclosure, the inorganic salt additive is aluminum sulfate.

[0084] It should be noted that, due to the presence of long-chain zwitterionic surfactants, sulfate ions can only appear simultaneously with trivalent cations to avoid changing the interfacial tension between the solid and liquid, and thus to prevent disrupting the balance between lipophilic and hydrophilic values.

[0085] In this embodiment, the inorganic salt additive is aluminum sulfate, which can be compounded and synergistically combined with polyacrylamide and long-chain zwitterionic surfactants to reduce the potential between fine particles in ore washing and beneficiation wastewater, reduce hydration repulsion, break or weaken the hydration effect on the particle surface and enhance the bridging mechanism, and also reduce costs.

[0086] In one embodiment of this disclosure, the amino coupling agent is a mercaptoacetic acid-amined organic coupling agent.

[0087] In the embodiments of this disclosure, the amino functional groups in the amino coupling agent can form hydrogen bonds on the surface of fine particles in ore washing and beneficiation wastewater, and synergistically enhance the attraction between particles and promote flocculation by interacting with other components (long-chain zwitterionic surfactants, polyacrylamide and inorganic salt additives).

[0088] Based on the same concept, this disclosure can provide a method for preparing a high-efficiency, multi-functional mud conditioner, used to produce the high-efficiency, multi-functional mud conditioner in the above embodiments.

[0089] Figure 1 This is a flowchart illustrating a method for preparing a highly efficient and multifunctional mud conditioner according to an exemplary embodiment.

[0090] like Figure 1 As shown, a method for preparing a high-efficiency, multifunctional mud conditioner includes:

[0091] Step S1: Weigh out 10-15 parts of long-chain amphoteric surfactant, 60-70 parts of polyacrylamide, 14-25 parts of inorganic salt additive, and 0.5-1.0 parts of amino coupling agent for later use.

[0092] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and inorganic salt additive to a mixing device and stir until uniformly mixed to obtain the first mixture.

[0093] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0094] The mixing equipment includes any one of the following: spiral mixer, free fall mixer, forced stirring mixer, and stirring tank.

[0095] The spiral mixer can be a conical spiral mixer or other types of spiral mixers, and the embodiments disclosed herein are not limited to this.

[0096] In the embodiments of this disclosure, when the high-efficiency multifunctional mud conditioner is used for mineral mud pressure filtration and wastewater flocculation treatment in ore washing and beneficiation, the combination of long-chain zwitterionic surfactants with polyacrylamide, inorganic salt additives, and amino coupling agents can both alter the kinetic potential between fine particles in the ore washing and beneficiation wastewater, thereby enhancing flocculation, and also alter the interfacial tension between the fine particles and water in the ore washing and beneficiation wastewater, increasing hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, thus giving the high-efficiency multifunctional mud conditioner multiple functions of flocculation and filtration. Without changing the existing filtration equipment and process conditions, it can improve pressure filtration efficiency and reduce flocculation settling time, effectively improving washing and beneficiation production efficiency and meeting the requirements of the mining industry for water treatment additives.

[0097] Figure 2 This is a flowchart illustrating a method for preparing a highly efficient and multifunctional mud conditioner according to an exemplary embodiment.

[0098] In one embodiment of this disclosure, such as Figure 2 As shown, step S2 includes:

[0099] Step S21: Add 10-15 parts of long-chain zwitterionic surfactant and 14-25 parts of inorganic salt additive to a mixing device for mixing.

[0100] Step S22: Stir and mix the long-chain zwitterionic surfactant and inorganic salt additive at room temperature and pressure for no less than 30 minutes to obtain the first mixture.

[0101] The mixing equipment includes any one of the following: spiral mixer, free fall mixer, forced stirring mixer, and stirring tank.

[0102] The spiral mixer can be a conical spiral mixer or other types of spiral mixers, and the embodiments disclosed herein are not limited to this.

[0103] For example, step S21: 10 parts of long-chain zwitterionic surfactant and 25 parts of inorganic salt additive are added to a conical spiral mixer for mixing.

[0104] Step S22: The long-chain zwitterionic surfactant and inorganic salt additive are stirred and mixed at room temperature and pressure for 30 minutes to obtain the first mixture.

[0105] For example, step S21: 15 parts of long-chain zwitterionic surfactant and 14 parts of inorganic salt additive are added to a free-fall mixer for mixing.

[0106] Step S22: The long-chain zwitterionic surfactant and inorganic salt additive are stirred and mixed at room temperature and pressure for 40 minutes to obtain the first mixture.

[0107] For example, step S21: 14 parts of long-chain zwitterionic surfactant and 23 parts of inorganic salt additive are added to a stirred tank for mixing.

[0108] Step S22: The long-chain zwitterionic surfactant and inorganic salt additive are stirred and mixed at room temperature and pressure for 45 minutes to obtain the first mixture.

[0109] In this embodiment of the disclosure, the long-chain amphoteric surfactant and the inorganic salt additive are first added to a mixing device for mixing, and the mixing time is not less than 30 minutes, so that the long-chain amphoteric surfactant and the inorganic salt additive are fully mixed and uniform, to obtain a first mixture.

[0110] Figure 3 This is a flowchart illustrating a method for preparing a highly efficient and multifunctional mud conditioner according to an exemplary embodiment.

[0111] In one embodiment of this disclosure, such as Figure 3 As shown, step S3 includes:

[0112] Step S31: Add 60-70 parts of polyacrylamide and 0.5-1.0 parts of amino coupling agent to the mixing equipment in sequence, and mix with the first mixture.

[0113] Step S32: Polyacrylamide, amino coupling agent and the first mixture are stirred and mixed at room temperature and pressure for no less than 30 minutes to obtain a high-efficiency multifunctional mud conditioner.

[0114] The mixing equipment includes any one of the following: spiral mixer, free fall mixer, forced stirring mixer, and stirring tank.

[0115] The spiral mixer can be a conical spiral mixer or other types of spiral mixers, and the embodiments disclosed herein are not limited to this.

[0116] For example, in step S31: 64.5 parts of polyacrylamide and 0.5 parts of amino coupling agent are added sequentially to a conical spiral mixer to mix with the first mixture.

[0117] Step S32: Polyacrylamide, amino coupling agent and the first mixture are stirred and mixed at room temperature and pressure for 30 minutes to obtain a high-efficiency multifunctional mud conditioner.

[0118] For example, in step S31: 70 parts of polyacrylamide and 1.0 part of amino coupling agent are added sequentially to a free-fall mixer and mixed with the first mixture.

[0119] Step S32: Polyacrylamide, amino coupling agent and the first mixture are stirred and mixed at room temperature and pressure for 40 minutes to obtain a high-efficiency multifunctional mud conditioner.

[0120] For example, in step S31: 68 parts of polyacrylamide and 0.9 parts of amino coupling agent are added sequentially to a stirred tank and mixed with the first mixture.

[0121] Step S32: Polyacrylamide, amino coupling agent and the first mixture are stirred and mixed at room temperature and pressure for 45 minutes to obtain a high-efficiency multifunctional mud conditioner.

[0122] In this embodiment of the disclosure, polyacrylamide and amino coupling agent are added to a mixing device and mixed with a first mixture for a mixing time of not less than 30 minutes, so that the first mixture, polyacrylamide and amino coupling agent are fully and evenly mixed to obtain a highly efficient and multifunctional mud conditioner.

[0123] Based on the same concept, this disclosure can provide an application of a highly efficient and multifunctional mud conditioner in slurry pressure filtration and wastewater flocculation dewatering during ore washing and beneficiation.

[0124] The high-efficiency multifunctional mud conditioner disclosed herein improves the mud filtration efficiency by more than 30% compared with traditional filter press agents, based on 10t of wastewater; and shortens the wastewater flocculation and settling time by 5-8 minutes compared with traditional wastewater flocculants. It significantly improves both flocculation and filtration effects in the treatment of ore washing and beneficiation wastewater.

[0125] The disclosed high-efficiency multifunctional mud conditioner comprises a long-chain zwitterionic surfactant, polyacrylamide, inorganic salt additives, and an amino coupling agent. When this high-efficiency multifunctional mud conditioner is used for mineral slurry pressure filtration and wastewater flocculation treatment in ore washing and beneficiation, the combination of the long-chain zwitterionic surfactant with polyacrylamide, inorganic salt additives, and an amino coupling agent can both alter the kinetic potential between fine particles in the ore washing and beneficiation wastewater, thereby enhancing flocculation, and also alter the interfacial tension between the fine particles and water in the ore washing and beneficiation wastewater, increasing hydration repulsion. This enhances the filtration effect without affecting the flocculation effect, giving the high-efficiency multifunctional mud conditioner multiple functions of flocculation and filtration. Without changing existing filtration equipment and process conditions, it can improve pressure filtration efficiency and reduce flocculation settling time, effectively improving washing and beneficiation production efficiency and thus meeting the requirements of the mining industry for water treatment additives.

[0126] Several embodiments of the highly efficient and multifunctional mud conditioner disclosed herein will be described in detail below.

[0127] In the following examples, experimental methods without specific conditions were selected or determined according to conventional methods and conditions.

[0128] Unless otherwise specified, all experimental materials used in the following embodiments are commercially available.

[0129] Example 1

[0130] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0131] 15 parts of long-chain zwitterionic surfactant;

[0132] 70 parts of polyacrylamide;

[0133] 14 parts calcium chloride;

[0134] 1.0 part of amino coupling agent.

[0135] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0136] Step S1: Weigh out 15 parts of long-chain zwitterionic surfactant, 70 parts of polyacrylamide, 14 parts of calcium chloride, and 1.0 part of amino coupling agent for later use.

[0137] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and calcium chloride to a mixing device and stir until uniformly mixed to obtain the first mixture.

[0138] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0139] Example 2

[0140] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0141] 13.8 parts of long-chain zwitterionic surfactant;

[0142] 69.4 parts of polyacrylamide;

[0143] 16 parts magnesium chloride;

[0144] 0.8 parts of amino coupling agent.

[0145] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0146] Step S1: Weigh out 13.8 parts of long-chain zwitterionic surfactant, 69.4 parts of polyacrylamide, 16 parts of magnesium chloride, and 0.8 parts of amino coupling agent for later use.

[0147] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and magnesium chloride to a stirred tank and stir until uniformly mixed to obtain the first mixture.

[0148] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0149] Example 3

[0150] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0151] 14.5 parts of long-chain zwitterionic surfactant;

[0152] 70 parts of polyacrylamide;

[0153] 14.5 parts aluminum sulfate;

[0154] 1.0 part of amino coupling agent.

[0155] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0156] Step S1: Weigh out 14.5 parts of long-chain zwitterionic surfactant, 70 parts of polyacrylamide, 14.5 parts of aluminum sulfate, and 1.0 part of amino coupling agent for later use.

[0157] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and aluminum sulfate to a stirred tank and stir until uniformly mixed to obtain the first mixture.

[0158] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0159] Example 4

[0160] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0161] 10 parts of long-chain zwitterionic surfactant;

[0162] 64.5 parts of polyacrylamide;

[0163] 25 parts calcium chloride;

[0164] 0.5 parts of amino coupling agent.

[0165] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0166] Step S1: Weigh out 10 parts of long-chain zwitterionic surfactant, 64.5 parts of polyacrylamide, 25 parts of calcium chloride, and 0.5 parts of amino coupling agent for later use.

[0167] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and calcium chloride to a stirred tank and stir until uniformly mixed to obtain the first mixture.

[0168] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0169] Example 5

[0170] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0171] 14.2 parts of long-chain zwitterionic surfactant;

[0172] 60 parts of polyacrylamide;

[0173] 25 parts calcium chloride;

[0174] 0.8 parts of amino coupling agent.

[0175] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0176] Step S1: Weigh out 14.2 parts of long-chain zwitterionic surfactant, 60 parts of polyacrylamide, 25 parts of calcium chloride, and 0.8 parts of amino coupling agent for later use.

[0177] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and calcium chloride to a stirred tank and stir until uniformly mixed to obtain the first mixture.

[0178] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0179] Example 6

[0180] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0181] 11 parts of long-chain zwitterionic surfactant;

[0182] 70 parts of polyacrylamide;

[0183] 18.3 parts magnesium chloride;

[0184] 0.7 parts of amino coupling agent.

[0185] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0186] Step S1: Weigh out 11 parts of long-chain zwitterionic surfactant, 70 parts of polyacrylamide, 18.3 parts of magnesium chloride, and 0.7 parts of amino coupling agent for later use.

[0187] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and magnesium chloride to a stirred tank and stir until uniformly mixed to obtain the first mixture.

[0188] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0189] Example 7

[0190] According to one embodiment of the present disclosure, the high-efficiency multifunctional mud conditioner includes the following raw materials and parts by weight:

[0191] 12 parts of long-chain zwitterionic surfactant;

[0192] 67.3 parts of polyacrylamide;

[0193] 20 parts aluminum sulfate;

[0194] 0.7 parts of amino coupling agent.

[0195] The high-efficiency, multifunctional mud conditioner of this embodiment was prepared according to the following method:

[0196] Step S1: Weigh out 12 parts of long-chain zwitterionic surfactant, 67.3 parts of polyacrylamide, 20 parts of aluminum sulfate, and 0.7 parts of amino coupling agent for later use.

[0197] Step S2: Add the above-mentioned weight proportions of long-chain zwitterionic surfactant and aluminum sulfate to a stirred tank and stir until uniformly mixed to obtain the first mixture.

[0198] Step S3: Add the above-mentioned parts by weight of polyacrylamide and amino coupling agent in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

[0199] Using the highly efficient multifunctional mud conditioner disclosed herein as an example, and using a commercially available product with filtration or flocculation effects as a comparative example, the following tests were conducted on the examples and comparative examples under the same conditions.

[0200] Table 1 shows the test results of pressure filtration experiments conducted using Examples 1 and 4 of this disclosure, commercially available products (1), (2), and (3). The commercially available products are three common regulators found on the market.

[0201]

[0202] Table 1 shows the results of wastewater pressure filtration treatment under the same conditions of feeding time (40s), feeding concentration (450.0 g / L), regulator addition amount (1.0 g / L) and filter cake thickness (42.0 mm).

[0203] Compared with commercially available products, the high-efficiency multifunctional mud conditioner disclosed in Examples 1 and 4 exhibits the lowest filter cake moisture content, the highest filter press water yield, and a significantly improved filter press efficiency. Furthermore, the filter press water yield increases by 6%, and the average filter cake moisture content decreases by 9%. This demonstrates that the high-efficiency multifunctional mud conditioner disclosed in this invention has a significant filtration aid effect.

[0204] Table 2 shows the test results of pressure filtration experiments conducted using Examples 1 and 4 of this disclosure, commercially available products (1), (2), and (3). The commercially available products are three common regulators found on the market.

[0205]

[0206] Table 2 shows the results of wastewater pressure filtration treatment under the same feed concentration (400.0 g / L), filtration pressure (0.8 MPa), and cutoff effluent flow rate (470.0 g).

[0207] Compared with commercially available products, the high-efficiency multifunctional mud conditioner disclosed in Examples 1 and 4 has the lowest filter cake moisture content, significantly shortens the filtration time, and significantly improves production efficiency. Furthermore, the filtration time is shortened by more than 40%, and the production efficiency is increased by 35-40%. This demonstrates that the high-efficiency multifunctional mud conditioner disclosed in this invention has a significant filtration aid effect.

[0208] Table 3 shows the test results of flocculation experiments conducted using Examples 1 and 4 of this disclosure, polyacrylamide, polyaluminum chloride, and commercially available composite flocculants.

[0209]

[0210] Table 3 shows the flocculation treatment of the same volume of wastewater (20g / L mud) under the same feeding time (15s) and settling time (20s).

[0211] Compared with polyacrylamide, polyaluminum chloride, and commercially available composite flocculants, the high-efficiency multifunctional mud conditioner disclosed in Examples 1 and 4 has the highest amount of clean water, the least amount of bottom mud, the highest clean water ratio, and improved flocculation effect. Furthermore, the flocculated effluent rate increased by 7.3%. This indicates that the high-efficiency multifunctional mud conditioner of this disclosure can also be used for flocculated water treatment, demonstrating the multifunctionality of this disclosure.

[0212] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0213] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0214] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0215] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0216] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0217] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0218] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A high-efficiency, multi-functional mud conditioner, characterized in that, The high-efficiency, multi-functional mud conditioner is composed of the following raw materials and their weight proportions: 10-15 parts of long-chain zwitterionic surfactant; 60-70 parts of polyacrylamide; 14-25 parts of inorganic salt additives; 0.5-1.0 parts of amino coupling agent, The long-chain zwitterionic surfactant has 16-18 carbon atoms in its long chain.

2. The high-efficiency multifunctional mud conditioner according to claim 1, characterized in that, The long carbon chain in the long-chain zwitterionic surfactant is a straight-chain alkyl chain.

3. The high-efficiency multifunctional mud conditioner according to claim 1, characterized in that, The polyacrylamide is either anionic or nonionic.

4. The high-efficiency multifunctional mud conditioner according to claim 1, characterized in that, The polyacrylamide has a molecular weight greater than or equal to 15 million.

5. The high-efficiency multifunctional mud conditioner according to claim 1, characterized in that, The inorganic salt additive is one or both of calcium chloride and magnesium chloride.

6. The high-efficiency multifunctional mud conditioner according to claim 1, characterized in that, The inorganic salt additive is aluminum sulfate.

7. The high-efficiency multifunctional mud conditioner according to claim 1, characterized in that, The amino coupling agent is a mercaptoacetic acid-amined organic coupling agent.

8. A method for preparing a high-efficiency, multifunctional mud conditioner as described in any one of claims 1 to 7, characterized in that, The preparation method includes: Step S1: Weigh out 10-15 parts of long-chain amphoteric surfactant, 60-70 parts of polyacrylamide, 14-25 parts of inorganic salt additive, and 0.5-1.0 parts of amino coupling agent for later use. Step S2: Add the above-mentioned weight proportions of the long-chain zwitterionic surfactant and the inorganic salt auxiliary to a mixing device and stir until uniformly mixed to obtain a first mixture; and, Step S3: Add the polyacrylamide and amino coupling agent in the above-mentioned weight proportions in sequence, mix with the first mixture and stir until uniformly mixed to obtain a high-efficiency multifunctional mud conditioner.

9. The preparation method of the high-efficiency multifunctional mud conditioner according to claim 8, characterized in that, Step S2 includes: Step S21: Add the above-mentioned weight proportions of the long-chain zwitterionic surfactant and the inorganic salt auxiliary to a mixing device for mixing; Step S22: The long-chain zwitterionic surfactant and the inorganic salt additive are stirred and mixed at room temperature and pressure for no less than 30 minutes to obtain a first mixture.

10. The preparation method of the high-efficiency multifunctional mud conditioner according to claim 8, characterized in that, Step S3 includes: Step S31: Add the polyacrylamide and the amino coupling agent in the above-mentioned weight proportions to the mixing device in sequence, and mix them with the first mixture; Step S32: The polyacrylamide, the amino coupling agent and the first mixture are stirred and mixed at room temperature and pressure for no less than 30 minutes to obtain a high-efficiency multifunctional mud conditioner.

11. The preparation method of the high-efficiency multifunctional mud conditioner according to claim 8, characterized in that, The mixing equipment includes any one of a spiral mixer, a free-fall mixer, a forced stirring mixer, and a stirred tank.

12. The application of any one of the high-efficiency multifunctional mud conditioner according to claims 1 to 7 in mud pressure filtration and sewage flocculation dewatering during ore washing and beneficiation.

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