A novel ultrafine all-metal separating agent and its preparation method

Abstract

This invention discloses a novel ultrafine all-metal separating agent and its preparation method, belonging to the field of separating agent technology. The agent comprises, by mass parts: 38-45 parts of an ultrafine nano-core-shell unwrapping component, 22-28 parts of a dual-center targeted coordination trapping component, 12-16 parts of a carbon-sulfur-arsenic tri-redirection inhibition component, 7-11 parts of a stealthy noble metal in-situ activation component, 4-6 parts of a nanoscale dispersed rheological stabilizing component, and 5-7 parts of a weakly alkaline synergistic buffering and enhancing component. The beneficial effects of this invention are: it integrates fracture penetration unwrapping, directional inhibition of harmful components, in-situ activation of stealthy noble metals, coordination trapping of multi-valence metals, and simultaneous fractional separation of multiple minerals into one process. Multiple effects can be achieved with a single addition, significantly simplifying the mineral processing flow. It simultaneously inhibits carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity, passivates active sites on impurity surfaces, and improves the stability and selectivity of the mineral processing system.

Description

Technical Field

[0001] This invention relates to the field of separating agent technology, specifically to a novel ultrafine all-metal separating agent and its preparation method. Background Technology

[0002] Metals are substances that possess a unique luster, are opaque, ductile, and have thermal and electrical conductivity. In a narrow sense, they refer to elemental substances composed of metallic elements. Precious metals and non-ferrous metals are two important categories in the classification of metals. Precious metals are a class of metals that are scarce in the Earth's crust, expensive, and chemically stable. They belong to a subclass of non-ferrous metals. Non-ferrous metals refer to all metals except iron, manganese, chromium, and their alloys.

[0003] In the field of precious and non-ferrous metal beneficiation, complex and difficult-to-process ores are often coated with a large amount of precious metals by carbonaceous matter, sulfides, and arsenic compounds (arsenic trioxide), making it difficult for conventional collectors and inhibitors to penetrate the micro-fractures of the minerals and effectively dissociate the coated metals. This results in problems such as low recovery rate, poor selectivity, and difficulty in eliminating interference factors.

[0004] However, when separating precious metals and non-ferrous metals using existing technologies, it is difficult for existing separating agents to achieve simultaneous separation of precious metals and non-ferrous metals in low-grade ores and polymetallic symbiotic ores. This requires segmented dosing and multi-process operation, which is not only costly but also prone to causing mutual interference between minerals and fluctuations in indicators.

[0005] Therefore, we propose a novel ultrafine all-metal separating agent and its preparation method. Summary of the Invention

[0006] In view of the problems existing in the above and / or the existing novel ultrafine all-metal separating agent and its preparation method, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a novel ultrafine all-metal separating agent and its preparation method. By improving the existing metal separating agent, it can solve the problems mentioned above in the prior art where, for low-grade ores and polymetallic symbiotic ores, the existing separating agent is difficult to achieve simultaneous separation of precious metals and non-ferrous metals, requiring segmented dosing and multi-process operation, which is not only costly but also prone to mutual interference between minerals and fluctuations in indicators.

[0008] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A novel ultrafine all-metal separating agent comprises, by mass parts: 38–45 parts of an ultrafine nano-core-shell disintegration component, 22–28 parts of a dual-center targeted coordination trapping component, 12–16 parts of a carbon-sulfur-arsenic tri-redirection inhibition component, 7–11 parts of an in-situ activation component for stealthy noble metals, 4–6 parts of a nanoscale dispersion rheological stabilizing component, and 5–7 parts of a weakly alkaline synergistic buffering and enhancing component. The separating agent has a core-shell coated nanocomposite structure with a particle size D90 ≤ 600 nm and a Zeta potential stability ≥ -30 mV. It maintains long-term homogeneous dispersion in a slurry environment and possesses the combined functions of fracture penetration disintegration, directional inhibition of harmful components, and in-situ activation of stealthy noble metals. This device integrates five functions: multi-valent metal coordination trapping, multi-mineral synchronous classification and separation; it can directionally dissociate and efficiently separate carbonaceous gold, sulfide gold, and arsenic (arsene) gold; it can perform in-situ activation and enhanced trapping of ionic, lattice, and ultrafine-grained stealthy precious metal ores; it can simultaneously achieve highly efficient and selective separation of difficult-to-process polymetallic symbiotic minerals and non-ferrous metal minerals; and it can simultaneously suppress carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity during the separation process, significantly improving the comprehensive recovery rate of precious and non-ferrous metals. It is suitable for integrated beneficiation and recovery of complex and difficult-to-process gold ores, low-grade precious metal ores, polymetallic symbiotic ores, and non-ferrous metal ores.

[0010] As a preferred embodiment of the novel ultrafine all-metal separator described in this invention, the ultrafine nano-core-shell uncoating component is composed of modified nano-silica and nano-humic acid in a specific ratio, which can penetrate mineral micro-cracks and destroy the encapsulation layer structure, thereby efficiently dissociating the encapsulated precious metals.

[0011] As a preferred embodiment of the novel ultrafine all-metal separator described in this invention, the dual-center targeted coordination trapping component contains two active sites: a nitrogen coordination group and a sulfur coordination group, which can simultaneously target and trap noble metal ions and non-ferrous metal minerals, thereby improving the trapping capacity and selectivity.

[0012] As a preferred embodiment of the novel ultrafine all-metal separator described in this invention, the carbon-sulfur-arsenic tri-redirection inhibitory component can specifically adsorb and passivate the active sites on the surfaces of carbonaceous materials, sulfides, and arsenides, thereby inhibiting their interference with, competitive adsorption of, and metal-stealing effects on precious metals.

[0013] As a preferred embodiment of the novel ultrafine all-metal separator described in this invention, the in-situ activation component of the hidden noble metal can transform ionic, lattice, and ultrafine noble metal particles into collectable active forms, thereby enhancing the separator's ability to identify and collect difficult-to-recover noble metals.

[0014] This invention discloses a method for preparing a novel ultrafine all-metal separating agent, which includes the following steps:

[0015] Step 1: Add the ultrafine nano core-shell uncoagulated components into a dispersion device and disperse them at low temperature under a protective atmosphere. Control the stirring rate and dispersion time to ensure that the components are fully deaggregated and form a uniform and stable core-shell structure dispersion.

[0016] Step 2: Slowly add the dual-center targeted coordination trapping component to the system obtained in Step 1, and continuously stir under constant temperature to carry out coordination complexation, so that the active coordination groups are uniformly loaded on the surface of the core-shell structure to form a targeted trapping intermediate.

[0017] Step 3: Slowly add the carbon-sulfur-arsenic tri-redirection inhibition component and the stealth noble metal in-situ activation component to the above intermediate in sequence, and stir at low speed until all functional components are fully mixed and the system is homogeneous;

[0018] Step 4: Finally, add the nano-scale dispersed rheological stabilizing component and the weakly alkaline synergistic buffering and enhancing component, and continuously stir to adjust the dispersion state, rheological properties and acid-base environment of the system, so that the product reaches the preset particle size and potential index, and obtain the finished separation agent after filtration.

[0019] In a preferred embodiment of the method for preparing a novel ultrafine all-metal separating agent according to the present invention, the low-temperature dispersion temperature in step one is controlled at 40℃~50℃, the dispersion speed is 3000r / min~5000r / min, and the dispersion time is 20min~40min, so as to avoid component agglomeration and deactivation caused by high temperature.

[0020] In a preferred embodiment of the method for preparing a novel ultrafine all-metal separating agent according to the present invention, the stirring and compounding time in step two is 30 min to 60 min, and the stirring speed is 800 r / min to 1200 r / min, to ensure sufficient coordination and compounding, uniform structure, and stable active sites.

[0021] As a preferred embodiment of the method for preparing a novel ultrafine all-metal separating agent according to the present invention, in step four, the system is adjusted to ensure that the final particle size D90 ≤ 600 nm, the Zeta potential stability ≥ -30 mV, the stirring speed is 500 r / min ~ 800 r / min, and the stirring time is 15 min ~ 30 min, so as to ensure the ultrafine dispersion and long-term stability of the separating agent.

[0022] As a preferred embodiment of the method for preparing a novel ultrafine all-metal separating agent according to the present invention, the prepared separating agent is stable and applicable under wide pH, high impurity, and low-grade slurry conditions, and is suitable for integrated mineral processing of refractory gold mines, low-grade precious metal mines, and polymetallic symbiotic mines.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0024] 1. This invention integrates fracture penetration and unwrapping, directional inhibition of harmful components, in-situ activation of hidden precious metals, coordination trapping of multivalent metals, and simultaneous fractionation and separation of multiple minerals. Multiple effects can be achieved with a single addition of reagents, greatly simplifying the mineral processing process. It simultaneously inhibits carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity, passivates the active sites on the surface of impurities, reduces competitive adsorption and harmful side reactions, and improves the stability and selectivity of the mineral processing system.

[0025] 2. In this invention, a core-shell coated nanocomposite structure is adopted, with a particle size D90≤600nm and a Zeta potential≥-30mV. It maintains long-term homogeneous dispersion in slurry, without agglomeration or sedimentation, and its permeability is significantly improved. It can enter the nanoscale microcracks of minerals to play a role, and can efficiently dissociate carbonaceous gold, sulfide gold, and arsenide gold, transforming ionic, lattice, and ultrafine-grained stealth precious metals into a collectable form, significantly improving the comprehensive recovery rate of precious metals and non-ferrous metals.

[0026] 3. This invention is stable and applicable in environments with wide pH, high impurities, and low-grade slurry. It can realize the integrated recovery of complex and difficult-to-process gold mines, low-grade precious metal mines, polymetallic symbiotic mines, and non-ferrous metal mines. It has strong versatility and adopts low-temperature dispersion, gradient feeding, constant temperature coordination and compounding, and precise adjustment and stabilization processes. The product has a uniform structure, stable performance, and good repeatability, making it suitable for industrial production. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the composition of the ultrafine all-metal separator of the present invention;

[0028] Figure 2 This is a schematic diagram illustrating the five-in-one synergistic function of the separating agent in this invention;

[0029] Figure 3 This is a schematic diagram illustrating the dissociation and separation of mineral-encapsulated precious metals according to the present invention;

[0030] Figure 4 This is a schematic diagram of the overall manufacturing process of the separating agent of the present invention;

[0031] Figure 5 This is a schematic diagram of the mineral processing workflow for the separating agent of the present invention.

[0032] Figure 6 This is a schematic diagram illustrating the performance indicators of the separating agent of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0034] This invention provides a novel ultrafine all-metal separating agent and its preparation method, which integrates fracture penetration and unwrapping, directional inhibition of harmful components, in-situ activation of hidden precious metals, coordination trapping of multivalent metals, and simultaneous fractionation and separation of multiple minerals. Multiple functions can be achieved with a single addition, greatly simplifying the mineral processing flow. It simultaneously inhibits carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity, passivates active sites on impurity surfaces, reduces competitive adsorption and harmful side reactions, and improves the stability and selectivity of the mineral processing system.

[0035] Please see Figure 1-6 A novel ultrafine all-metal separating agent and its preparation method are disclosed. The agent comprises, by mass parts: 38–45 parts of an ultrafine nano-core-shell disintegration component, 22–28 parts of a dual-center targeted coordination trapping component, 12–16 parts of a carbon-sulfur-arsenic tri-redirection inhibition component, 7–11 parts of a stealthy noble metal in-situ activation component, 4–6 parts of a nanoscale dispersion rheological stabilizing component, and 5–7 parts of a weakly alkaline synergistic buffering and enhancing component. The separating agent has a core-shell coated nanocomposite structure with a particle size D90≤600nm and a Zeta potential stability ≥-30mV. It maintains long-term homogeneous dispersion in a slurry environment and possesses a five-in-one synergistic function: fracture penetration disintegration, directional inhibition of harmful components, in-situ activation of stealthy noble metals, coordination trapping of multivalent metals, and simultaneous fractional separation of multiple minerals. It can directionally dissociate and efficiently separate carbonaceous gold, sulfide-encapsulated gold, and arsenic (arsene)-encapsulated gold. This technology enables in-situ activation and enhanced capture of ionic, lattice-state, and ultrafine-grained stealth precious metal ores. Simultaneously, it achieves highly efficient and selective separation of difficult-to-process polymetallic symbiotic minerals and non-ferrous metal minerals. During the separation process, it simultaneously suppresses carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity, significantly improving the overall recovery rate of precious and non-ferrous metals. It is suitable for integrated beneficiation and recovery of complex and difficult-to-process gold ores, low-grade precious metal ores, polymetallic symbiotic ores, and non-ferrous metal ores. It integrates fracture penetration and disentangling, directional suppression of harmful components, in-situ activation of stealth precious metals, coordination capture of multi-valence metals, and simultaneous fractional separation of multiple minerals. Multiple effects can be achieved with a single dosage, greatly simplifying the beneficiation process. It simultaneously suppresses carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity, passivates active sites on impurity surfaces, reduces competitive adsorption and harmful side reactions, and improves the stability and selectivity of the beneficiation system.

[0036] Among them, the ultrafine nano core-shell unwrapping component is composed of modified nano silica and nano humic acid in a specific ratio, which can penetrate mineral micro-cracks and destroy the encapsulation layer structure, efficiently dissociating the encapsulated noble metals; the dual-center targeted coordination trapping component contains dual active sites of nitrogen coordination group and sulfur coordination group, which can simultaneously target and trap noble metal ions and non-ferrous metal minerals, improving the trapping capacity and selectivity.

[0037] The carbon-sulfur-arsenic tri-redirection inhibition component can specifically adsorb and passivate the active sites on the surfaces of carbonaceous materials, sulfides, and arsenides, inhibiting their interference, competitive adsorption, and metal-stealing effects on precious metals; the in-situ activation component for stealth precious metals can convert ionic, lattice, and ultrafine-grained precious metals into collectable active forms, enhancing the separation agent's ability to identify and collect difficult-to-recover precious metals.

[0038] This invention discloses a novel method for preparing an ultrafine all-metal separating agent, comprising the following steps: Step 1: The ultrafine nano-core-shell depolymerization component is fed into a dispersion device and dispersed at low temperature under a protective atmosphere. The stirring rate and dispersion time are controlled to ensure complete depolymerization of the component, forming a uniform and stable core-shell structure dispersion. Step 2: A dual-center targeted coordination trapping component is slowly added to the system obtained in Step 1. Under constant temperature conditions, continuous stirring is performed to carry out coordination and recombination, so that the active coordination groups are uniformly loaded on the surface of the core-shell structure, forming a targeted trapping intermediate. Step 3: A carbon-sulfur-arsenic tri-redirection inhibition component and a stealthy noble metal in-situ activation component are added to the above intermediate in sequence. The mixture is stirred at low speed until all functional components are fully mixed and the system is homogeneous. Step 4: Finally, a nanoscale dispersion rheological stabilizing component and a weakly alkaline synergistic buffering and enhancing component are added. The mixture is continuously stirred to adjust the dispersion state, rheological properties, and acid-base environment of the system, so that the product reaches the preset particle size and potential index. After filtration, the finished separating agent is obtained.

[0039] In step one, the low-temperature dispersion temperature is controlled at 40℃~50℃, the dispersion speed is 3000r / min~5000r / min, and the dispersion time is 20min~40min to avoid component agglomeration and activity deactivation caused by high temperature. In step two, the stirring and compounding time is 30min~60min, and the stirring speed is 800r / min~1200r / min to ensure sufficient coordination and compounding, uniform structure, and stable active sites.

[0040] In step four, the system is adjusted to ensure that the final particle size D90 ≤ 600 nm, the Zeta potential stability ≥ -30 mV, the stirring speed is 500 r / min ~ 800 r / min, and the stirring time is 15 min ~ 30 min, to ensure the ultrafine dispersion and long-term stability of the separating agent. The prepared separating agent is stable and applicable under wide pH, high impurity, and low grade slurry conditions, and is suitable for integrated beneficiation of refractory gold ores, low-grade precious metal ores, and polymetallic symbiotic ores.

[0041] The novel ultrafine all-metal separating agent of this invention uses a nano core-shell structure as a carrier in the mineral processing system to achieve efficient separation of difficult-to-process minerals through multi-site synergistic effects. The overall workflow can be divided into five stages: penetration and unwrapping, in-situ activation, targeted collection, directional inhibition, and synchronous classification.

[0042] First, the separating agent, with its ultra-fine particle size (D90≤600nm) and high dispersibility, rapidly penetrates the micro-fractures of minerals. The ultra-fine nano-core-shell unwrapping component wets, expands, and structurally disrupts the carbonaceous, sulfide, and arsenide inclusions, causing the encapsulated precious metals to dissociate and release from the inclusions, thus completing the fracture penetration and unwrapping process. This component, with modified nano-silica and nano-humic acid as its core, combines rigid support with flexible penetration capabilities, enabling precise disassembly of the inclusions without damaging the main mineral structure, thus providing a foundation for subsequent capture.

[0043] Secondly, the in-situ activation component of the stealth noble metal modifies the interface and regulates the valence state of the dissociated ionic, lattice, and ultrafine noble metal particles, transforming the inert forms that are difficult to capture into capture forms with active sites that can easily combine with capturing groups, thus greatly improving the recovery capacity of "stealth metals" that are difficult to recover by traditional processes.

[0044] Subsequently, the dual-center targeted coordination trapping component uses two active sites, nitrogen coordination group and sulfur coordination group, to specifically recognize and multi-point coordinate trapping of activated noble metal and non-ferrous metal ions. The dual active centers can simultaneously adapt to different types of metal ions, improve the trapping capacity and selectivity, realize the simultaneous trapping of noble metals and non-ferrous metals, and avoid the problem of insufficient selectivity of a single trapping group.

[0045] During the capture process, the carbon-sulfur-arsenic tri-redirection inhibitory component rapidly adsorbs onto the surfaces of carbonaceous materials, sulfides, and arsenides, passivating their active sites, blocking their competitive adsorption and metal-stealing effects on precious metals, inhibiting sulfur oxidation side reactions and arsenic poisoning effects, reducing impurity interference, and ensuring a stable and efficient capture process.

[0046] Finally, the synergistic effect of the nanoscale dispersed rheological stabilizing component and the weakly alkaline synergistic buffering and enhancing component maintains the dispersion stability, rheological properties and acid-base environment of the system, ensuring that the separating agent does not agglomerate or deactivate in complex slurries, prolonging the action time, improving the overall process stability, and the separated mineral-reagent complex has good hydrophobicity and floatability, which can be rapidly enriched by conventional flotation equipment to achieve simultaneous classification and separation of multiple minerals.

[0047] Overall, this invention, based on a core-shell nanostructure, achieves multiple functions in one step through a five-step synergistic mechanism of "unwrapping-activation-capture-inhibition-stabilization," including encapsulation dissociation, activation of stealth metals, capture of multiple metals, impurity inhibition, and system stabilization. It solves the pain points of traditional separating agents, such as single function, poor penetration, low recovery rate, and weak anti-interference. It demonstrates high efficiency, stability, and broad-spectrum technical advantages in the beneficiation of complex and difficult-to-process ores, low-grade ores, and polymetallic symbiotic ores, significantly improving the comprehensive recovery index, reducing reagent consumption and process complexity, and possessing significant technological advancement and promotion value.

[0048] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel ultrafine all-metal separating agent, characterized in that, The components, by weight, include: 38-45 parts of ultrafine nano-core-shell unpacking component, 22-28 parts of dual-center targeted coordination trapping component, 12-16 parts of carbon-sulfur-arsenic tri-redirection inhibition component, 7-11 parts of stealthy noble metal in-situ activation component, 4-6 parts of nanoscale dispersed rheological stabilizing component, and 5-7 parts of weakly alkaline synergistic buffering and enhancing component. The separating agent is a core-shell coated nanocomposite structure with a particle size D90≤600nm and a Zeta potential stability ≥-30mV. It maintains long-term homogeneous dispersion in a slurry environment and has a synergistic function of five-in-one: fracture penetration and unwrapping, directional inhibition of harmful components, in-situ activation of hidden precious metals, coordination trapping of multivalent metals, and simultaneous fractional separation of multiple minerals. It can directionally dissociate and efficiently separate carbonaceous gold, sulfide gold, and arsenic (arsenic poisoning) gold. It can perform in-situ activation and enhanced capture of ionic, lattice, and ultrafine-grained stealthy precious metal ores. At the same time, it can achieve highly efficient and selective separation of difficult-to-process polymetallic symbiotic minerals and non-ferrous metal minerals. During the separation process, it can simultaneously suppress carbonaceous gold robbery, sulfur oxidation interference, and arsenic toxicity side effects, significantly improving the comprehensive recovery rate of precious metals and non-ferrous metals. It is suitable for integrated beneficiation and recovery of complex and difficult-to-process gold ores, low-grade precious metal ores, polymetallic symbiotic ores, and non-ferrous metal ores.

2. The novel ultrafine all-metal separating agent according to claim 1, characterized in that, The ultrafine nano-core-shell unwrapping component is composed of modified nano-silica and nano-humic acid in a specific ratio. It can penetrate mineral micro-cracks and destroy the encapsulation layer structure, efficiently dissociating the encapsulated precious metals.

3. The novel ultrafine all-metal separating agent according to claim 2, characterized in that, The dual-center targeted coordination trapping component contains two active sites: a nitrogen coordination group and a sulfur coordination group. It can simultaneously target and trap noble metal ions and non-ferrous metal minerals, thereby improving the trapping capacity and selectivity.

4. The novel ultrafine all-metal separating agent according to claim 3, characterized in that, The carbon-sulfur-arsenic tri-redirection inhibitory component can specifically adsorb and passivate the active sites on the surfaces of carbonaceous materials, sulfides, and arsenides, thereby inhibiting their interference with, competitive adsorption of, and metal-stealing effects on precious metals.

5. A novel ultrafine all-metal separating agent according to claim 4, characterized in that, The in-situ activation component for stealth precious metals can transform ionic, lattice, and ultrafine-grained precious metals into collectable active forms, thereby enhancing the separation agent's ability to identify and collect difficult-to-recover precious metals.

6. A method for preparing a novel ultrafine all-metal separating agent as described in any one of claims 1-5, the method comprising the following steps: Step 1: Add the ultrafine nano core-shell uncoagulated components into a dispersion device and disperse them at low temperature under a protective atmosphere. Control the stirring rate and dispersion time to ensure that the components are fully deaggregated and form a uniform and stable core-shell structure dispersion. Step 2: Slowly add the dual-center targeted coordination trapping component to the system obtained in Step 1, and continuously stir under constant temperature to carry out coordination complexation, so that the active coordination groups are uniformly loaded on the surface of the core-shell structure to form a targeted trapping intermediate. Step 3: Slowly add the carbon-sulfur-arsenic tri-redirection inhibition component and the stealth noble metal in-situ activation component to the above intermediate in sequence, and stir at low speed until all functional components are fully mixed and the system is homogeneous; Step 4: Finally, add the nano-scale dispersed rheological stabilizing component and the weakly alkaline synergistic buffering and enhancing component, and continuously stir to adjust the dispersion state, rheological properties and acid-base environment of the system, so that the product reaches the preset particle size and potential index, and obtain the finished separation agent after filtration.

7. The method for preparing a novel ultrafine all-metal separating agent according to claim 6, characterized in that, In step one, the low-temperature dispersion temperature is controlled at 40℃~50℃, the dispersion speed is 3000r / min~5000r / min, and the dispersion time is 20min~40min, to avoid component agglomeration and activity deactivation caused by high temperature.

8. The method for preparing a novel ultrafine all-metal separating agent according to claim 7, characterized in that, The stirring and compounding time in step two is 30 min to 60 min, and the stirring speed is 800 r / min to 1200 r / min to ensure sufficient coordination and compounding, uniform structure, and stable active sites.

9. The method for preparing a novel ultrafine all-metal separating agent according to claim 8, characterized in that, The adjustment system described in step four ensures that the final particle size D90 ≤ 600 nm, the Zeta potential stability ≥ -30 mV, the stirring speed is 500 r / min ~ 800 r / min, and the stirring time is 15 min ~ 30 min, thus guaranteeing the ultrafine dispersion and long-term stability of the separating agent.

10. The method for preparing a novel ultrafine all-metal separating agent according to claim 9, characterized in that, The prepared separating agent is stable and applicable under wide pH, high impurity, and low-grade slurry conditions, and is suitable for integrated beneficiation of refractory gold ores, low-grade precious metal ores, and polymetallic symbiotic ores.

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