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WO2018161652A1 - 一种固体包裹体氧化铜矿选冶联合回收利用的方法 - Google Patents

一种固体包裹体氧化铜矿选冶联合回收利用的方法 Download PDF

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Publication number
WO2018161652A1
WO2018161652A1 PCT/CN2017/114278 CN2017114278W WO2018161652A1 WO 2018161652 A1 WO2018161652 A1 WO 2018161652A1 CN 2017114278 W CN2017114278 W CN 2017114278W WO 2018161652 A1 WO2018161652 A1 WO 2018161652A1
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copper
copper oxide
magnetic separation
heating
leaching
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French (fr)
Inventor
文书明
朱景和
刘媛媛
黄草明
邓久帅
刘建
沈海英
王伊杰
陈瑜
张谦
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Kunming University of Science and Technology
China Nonferrous Metal Mining Group Co Ltd
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Kunming University of Science and Technology
China Nonferrous Metal Mining Group Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0065—Leaching or slurrying
    • C22B15/0067—Leaching or slurrying with acids or salts thereof
    • C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for the combined recycling and utilization of solid inclusion copper oxide ore, belonging to the technical field of mineral processing metallurgy.
  • Copper oxide minerals mainly include malachite, chrysocolla, azurite, cuprite, chert, garnet malachite, copper, etc., mainly with gangue minerals such as silicate, carbonate and iron oxide.
  • the independently present oxidized copper ore such as malachite, chrysocolla, azurite, cuprite, and epochrite can be recovered by the fluorinated yellow medicine flotation method, and the binding rate is high, and the silicic acid is used.
  • the copper oxide ore which is densely symbiotic with salt minerals can be recycled by means of sulfuric acid leaching, solid-liquid separation and extraction electrowinning.
  • ammonia leaching and solidification can be used. The liquid is separated and extracted by electrowinning.
  • part of the copper oxide ore is closely symbiotic with limonite, hematite and biotite.
  • the copper ore is mostly oxidized by iron oxidized minerals and biotite. The method utilized makes this part of the copper oxide ore resources not effectively recycled.
  • vulcanization-xanthate flotation method is difficult to recover such copper oxide minerals because part of the copper oxide ore is encapsulated by hematite, limonite, biotite, and copper oxide minerals cannot be dissociated by monomers, vulcanizing agents and The collector xanthate is difficult to contact with the surface of the copper oxide mineral and cannot be floated to recover this part of the copper oxide mineral.
  • Conventional ammonia leaching-extraction-electrowinning technology cannot effectively recover this part of copper oxide ore because ammonia cannot damage the structure of iron oxide ore and biotite, and it is difficult to contact with copper oxide minerals in inclusions, and this part cannot be effectively leached. Copper oxide ore.
  • Ke Shengnan et al. used hydrochloric acid as the leaching agent to investigate the effects of leaching temperature, leaching time, hydrochloric acid volume and red mud mass ratio and hydrochloric acid concentration on the leaching rate of hydrazine during the recovery of sputum from hydrochloric acid by conventional and microwave strengthening. Studies have shown that microwaves have a certain strengthening effect on the leaching of bismuth [rare metals and hard alloys, 2016 (5): 26-31]. Gong Mingming analyzed the current status of aluminum leaching process of fly ash, aimed at reducing energy consumption and improving utilization of fly ash. Microwave heating technology was introduced to promote the rapid dissolution of aluminum in fly ash, and mechanical activation-hydrochloric acid leaching powder was explored.
  • a polymer bridge flotation method combining copper impregnation body is a combined copper impregnation body which cannot be recovered by conventional flotation, and adopts polymer bridging agent, copper ion bridge ion and xanthate bridge.
  • the collector is adsorbed by the polymer bridge ion on the surface of the copper-impregnated body, and the copper ion is adsorbed on the bridged adsorbent on the surface, and the collector xanthate anion is adsorbed on the bridged copper ion.
  • the surface of the copper-impregnated body is made hydrophobic to achieve effective flotation. The method can not be effectively used for the recovery and utilization of the solid inclusion copper oxide ore.
  • the reason is that the polymer of the compound of the overseas Chinese cannot be combined with the copper oxide ore which is surrounded by gangue minerals such as hematite, limonite and biotite.
  • the copper oxide mineral is recovered by means of Float flotation.
  • the method is for the oxygen-sulfur mixed copper ore with high combination rate and high calcium-magnesium carbonate gangue mineral content, firstly recovering the copper sulfide mineral and free copper oxide mineral by flotation, and the flotation tailings with fatty acid anti- Flotation of calcium-magnesium carbonate minerals, obtaining calcium-magnesium carbonate minerals low, containing copper in the middle ore, adding sulfuric acid, stirring and leaching combined with copper, solid-liquid separation of copper-containing solution to obtain copper products by metallurgical methods .
  • the method cannot be used for treating such solid inclusion copper oxide ore because the free copper oxide mineral in the solid inclusion copper oxide ore is less, the flotation of the yellow drug has no good effect, and the calcium and magnesium are floating.
  • the selection will cause some of the iron-containing minerals to enter the carbonate minerals, resulting in the loss of copper minerals.
  • the object of the present invention is to provide a method for solid-encapsulated copper oxide ore separation and utilization for a copper oxide ore which is difficult to recover by flotation and has a low direct acid leaching rate, and is obtained by strong magnetic separation.
  • the magnetic product of copper oxide is coated, the magnetic product is filtered, microwave drying and heating are used, and the selectivity of heating of different minerals in the solid inclusion by microwave is utilized, so that the temperature rises between the minerals and the volume expansion is different, and the crack is generated, which is the later sulfuric acid.
  • Leaching provides diffusion channels, increases leaching rates and leaching rates, and efficiently recovers this refractory copper ore resource.
  • a method for solid-packaged copper oxide ore separation and utilization comprising the following steps:
  • the copper content is 0.8% to 1.5%, the oxidation rate is greater than 95%, the copper distribution rate in the free copper oxide ore is less than 40%, and the distribution rate of copper wrapped in limonite, hematite and biotite is 50%.
  • the magnetic separation concentrate obtained in the step (1) is dried and heated by a continuous industrial microwave oven, and the heating temperature is heated.
  • the degree reaches 400 degrees Celsius to 450 degrees Celsius the temperature is kept for 10 minutes to 15 minutes, and the copper-containing inclusion material is obtained by microwave heating, and the steam generated by the magnetic separation concentrate is used to supplement the heated magnetic separation tailings slurry;
  • step (3) mixing the microwave-heated copper-containing inclusion material obtained in the step (2) with the normal-temperature magnetic separation tailings slurry obtained in the step (1) to cause water quenching of the inclusion mineral particles, and heating the slurry to be mixed.
  • the slurry is introduced into the mixing tank, sulfuric acid is added to the pH value of 1 to 1.5, and the steam is further introduced to continue heating, and the leaching is carried out for 90 minutes to 120 minutes under the condition of 50 to 60 degrees Celsius;
  • step (3) Performing solid-liquid separation of the leached pulp in step (3), extracting electrowinning to obtain electrowinning copper, and separating solid and liquid leaching slag into tailings.
  • the microwave is directly heated to the slurry. Because of the good absorbing properties of the water, the water is preferentially heated, the temperature of the ore is slow, and the temperature rise is less than 100 degrees Celsius.
  • the selective heating of the microwave causes cracks in the ore. Can not be used, the effect of microwave enhanced leaching is not obvious.
  • the invention directly heats the ore, has a fast heating rate, a high temperature, and has obvious cracks in the ore. Later, the leaching effect is obvious, and the amount of ore heated by the microwave is reduced, and the cost is also greatly reduced.
  • Figure 1 is a flow chart of the principles of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • Raw materials 1.5% copper grade, oxidation rate greater than 95%, copper distribution in free copper oxide ore is less than 40%, solid inclusion oxidation of 60% copper distribution in limonite, hematite and biotite Copper ore.
  • the magnetic separation concentrate is dried and heated by a continuous industrial microwave oven. When the heating temperature reaches 450 degrees Celsius, the temperature is kept for 15 minutes, and the copper-containing inclusion material is obtained by microwave heating, and the steam generated by the magnetic separation concentrate is used for replenishing. Heating magnetic separation tailings slurry;
  • the overall recovery rate of copper is 90%.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Raw materials 1.0% copper grade, oxidation rate greater than 95%, copper distribution in free copper oxide ore is less than 40%, and the distribution of copper encapsulated by limonite, hematite and biotite is 53% solid inclusion oxidation. Copper ore.
  • the magnetic separation concentrate is dried and heated by a continuous industrial microwave oven. When the heating temperature reaches 450 degrees Celsius, the temperature is kept for 15 minutes, and the copper-containing inclusion material is obtained by microwave heating, and the steam generated by the magnetic separation concentrate is used for replenishing. Heating magnetic separation tailings slurry;
  • the overall recovery rate of copper is 84%.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • Raw materials 0.8% copper content, oxidation rate greater than 95%, copper distribution rate in free copper oxide ore is less than 40%, solid inclusion oxidation of 50% copper distribution in limonite, hematite and biotite Copper ore.
  • the magnetic separation concentrate is dried and heated by a continuous industrial microwave oven, and when the heating temperature reaches 400 degrees Celsius, the temperature is kept for 10 minutes, and the copper-containing inclusion material is obtained by microwave heating;
  • the overall recovery rate of copper is 82%.

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  • Manufacturing & Machinery (AREA)
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Abstract

一种固体包裹体氧化铜矿选冶联合回收利用的方法，目的是对浮选难以回收、直接酸浸浸出率低的弱磁性矿物包裹的氧化铜矿，采用强磁选分离获得包裹氧化铜的磁性产物，对磁性产物过滤，采用微波干燥及加热，利用微波对固体包裹体中不同矿物加热的选择性，使矿物之间升温不同、体积膨胀不同而产生裂纹，为后来的硫酸浸出提供扩散通道，提高浸出速率和浸出率，高效回收这种难处理铜矿资源。

Description

一种固体包裹体氧化铜矿选冶联合回收利用的方法 技术领域
本发明涉及一种固体包裹体氧化铜矿选冶联合回收利用的方法，属于选矿冶金技术领域。
背景技术
在硫化铜矿资源不能满足经济社会发展需求的情况下，开采氧化铜矿资源成为必然，而氧化铜矿一般比硫化铜矿难以回收，所以研究氧化铜矿的选冶技术一直是选矿冶金领域的热点问题之一。氧化铜矿物主要包括孔雀石、硅孔雀石、蓝铜矿、赤铜矿、黑铜矿、假象孔雀石、结合铜等，主要与硅酸盐、碳酸盐、氧化铁等脉石矿物共伴生。对于结晶粒度较粗，独立存在的孔雀石、硅孔雀石、蓝铜矿、赤铜矿、黑铜矿等氧化铜矿，可以通过硫化黄药浮选法回收，对于结合率高，与硅酸盐矿物致密共生的氧化铜矿，可以采用硫酸浸出、固液分离、萃取电积的方式回收利用，而对于结合率低，与碳酸盐矿物致密共生的氧化铜矿，可以采用氨浸、固液分离、萃取电积的方法回收。但对于以假象孔雀石为主，部分氧化铜矿与褐铁矿、赤铁矿、黑云母致密共生，铜矿大部分被铁质氧化矿物和黑云母包裹的氧化铜矿，至今还没有高效回收利用的方法，致使这部分氧化铜矿资源没有得到有效回收利用。
常规的硫化—黄药浮选法难以回收这种氧化铜矿物，原因在于部分氧化铜矿被赤铁矿、褐铁矿、黑云母包裹，氧化铜矿物不能单体解离，硫化剂和捕收剂黄药类难以与氧化铜矿物表面接触，不能浮选回收这部分氧化铜矿物。常规的氨浸—萃取—电积技术不能有效回收这部分氧化铜矿，原因在于氨不能破坏氧化铁矿、黑云母的结构，难以与包裹体中的氧化铜矿物接触，不能有效浸出这部分氧化铜矿。
常规的酸浸技术用于处理这种氧化铜矿，由于硫酸难以向褐铁矿、赤铁矿、黑云母矿物晶体内部扩散，浸出速度慢，浸出率很低。加温可以提高扩散速度， 但浸出率提高的幅度有限，所以，常规的酸浸技术也很难高效回收这种铜矿资源。
柯胜男等采用盐酸为浸出剂，考察了在常规和微波强化作用下盐酸浸出赤泥回收锗过程中浸出温度、浸出时间、盐酸体积与赤泥质量比和盐酸浓度对锗浸出率的影响。研究表明，微波对锗的浸出具有一定的强化作用【稀有金属与硬质合金,2016(5):26-31】。公明明等分析了粉煤灰提铝浸取工艺现状,以降低能耗、提高粉煤灰利用率为目的,引入微波加热技术促进粉煤灰中铝的快速溶出,探索了机械活化-盐酸浸出粉煤灰工艺和使用助剂焙烧-盐酸浸出粉煤灰两种工艺【华东理工大学,2011】。汪劲鹏等在空白焙烧酸浸工艺的基础上考查微波加热浸出和常规加热浸出对某含钒石煤钒浸出率的影响。结果表明，在浸出温度98℃、焙烧样粒度-0.074mm占75％、硫酸体积分数20％、浸出时间90min、液固比1.5∶1(mL/g)时，微波加热的钒浸出率为88.2％,比相同条件下常规加热浸出高9个百分点【有色金属(冶炼部分),2015(10):54-57】。张琳叶等研究了恒功率微波辐射下从含铟锌浸渣中酸浸铟的非等温动力学。对比实验表明，恒功率微波辐射条件下铟浸出率高于常规程序升温条件下的铟浸出率【矿冶工程，2014(6):76-80】。这些微波强化浸出的研究表明，微波对物料浸出具有强化作用，其作用的本质在于强化了浸出过程扩散作用。但这些研究获得的强化效果仍不尽人意，浸出率提高的幅度不大。采用微波浸出过程，微波加热的温度难以高于摄氏100度，而且采用微波直接对大量的矿浆溶液长时间作用，工业上目前也没有成功的大规模液态加热微波设备可以利用，所以难以用微波强化来处理本发明针对的低品位难处理氧化铜原矿。
申请号为201210201306.4的一种结合铜浸染体的高分子桥联浮选方法，是针对常规浮选不能回收的结合铜浸染体，采用高分子桥联剂、铜离子桥联离子、黄药桥联捕收剂，通过高分子桥联剂离子在结合铜浸染体表面发生多原子吸附，铜离子在表面上吸附的桥联剂上再吸附，捕收剂黄药阴离子在桥联铜离子上吸附，造成结合铜浸染体表面疏水而实现有效浮选。该方法也不能有效用于该固体包裹体氧化铜矿的回收利用，原因在于高分子侨联剂分子不能与被赤铁矿、褐铁矿、黑云母等脉石矿物包裹的氧化铜矿作用，难以通过侨联浮选的方式回收该氧化铜矿物。
申请号为201010178875.2的一种高结合率碳酸盐脉石型氧硫混合铜的选冶 方法，是针对结合率高、钙镁碳酸盐脉石矿物含量高的氧硫混合铜矿,先通过浮选回收其中的硫化铜矿物和游离氧化铜矿物,浮选尾矿用脂肪酸反浮选其中的钙镁碳酸盐矿物,得到含钙镁碳酸盐矿物低,含结合铜的中矿,再添加硫酸搅拌浸出结合铜,固液分离后的含铜溶液通过冶金方法获得铜产品。该方法不能用于处理这种固体包裹体氧化铜矿，其原因在于，该固体包裹体氧化铜矿中的游离氧化铜矿物少，硫化黄药浮选没有好的效果，而钙镁反浮选将使部分含铁矿物进入碳酸盐矿物之中，导致铜矿物的损失。
丰奇成等人对新疆泥质难选氧化铜矿进行了浮选试验，研究得出：通过添加高效组合矿泥抑制剂CHO+A22有效地抑制了矿泥在浮选过程中的上浮，解决了浮选过程泡沫多且矿浆粘性大的问题，使整个浮选工艺顺畅进行，最终获得了铜品位18.18％，铜回收率为75.04％的良好指标【丰奇成等，矿产综合利用，2011(6):21～24，49】。但对于本发明所涉及的包裹型氧化铜矿，极其难选，单一的加温，或者是单一的分散和抑制矿泥，均不能获得令人满意的效果。
发明内容
本发明的目的是针对浮选难以回收、直接酸浸浸出率低的弱磁性矿物包裹的氧化铜矿，提供一种固体包裹体氧化铜矿选冶联合回收利用的方法，采用强磁选分离获得包裹氧化铜的磁性产物，对磁性产物过滤，采用微波干燥及加热，利用微波对固体包裹体中不同矿物加热的选择性，使矿物之间升温不同、体积膨胀不同而产生裂纹，为后来的硫酸浸出提供扩散通道，提高浸出速率和浸出率，高效回收这种难处理铜矿资源。
本发明通过以下技术方案来实现：
一种固体包裹体氧化铜矿选冶联合回收利用的方法，包括以下步骤：
(1)采用含铜品位0.8％～1.5％，氧化率大于95％，游离氧化铜矿中铜的分布率小于40％，褐铁矿、赤铁矿、黑云母包裹的铜的分布率50％～60％的固体包裹体氧化铜矿石，首先进行碎矿和磨矿，磨矿细度为-0.074mm质量百分含量占70％～80％，磨矿后的矿浆质量百分浓度35％～40％，采用磁感应强度为1.0T～1.6T的强磁场磁选机磁选回收包裹铜的铁质和黑云母矿物获得磁选精矿，并对磁选精矿过滤，滤液返回磁选作业，同时获得含游离氧化铜的磁选尾矿；
(2)将步骤(1)获得磁选精矿采用连续化工业微波炉干燥和加热，加热温 度达到摄氏400度～450度时，保温10分钟～15分钟，获得微波加热含铜包裹体物料，磁选精矿干燥所产生的蒸汽用于补充加温磁选尾矿矿浆；
(3)将步骤(2)获得的微波加热含铜包裹体物料与步骤(1)获得的常温磁选尾矿矿浆混合，使包裹体矿粒发生水淬，并使矿浆获得加温，将混合矿浆引入搅拌桶，加入硫酸至pH值1～1.5，同时引入蒸汽继续加热，在摄氏50度～60度的条件下搅拌浸出90分钟～120分钟；
(4)对步骤(3)完成浸出的矿浆进行固液分离，萃取电积获得电积铜，固液分离浸出渣为尾矿。
本发明具有以下优点和积极效果：
(1)采用磁选将难以浸出的磁性含铜固体包裹体分离出来单独强化处理，大大降低了强化处理的成本；
(2)采用微波选择性加热含铜固体包裹体，利用固体包裹体中各种矿物的升温速率不同出现的膨胀差异产生裂纹，为浸出过程的扩散创造条件；
(3)被加热的含铜固体包裹体直接加入矿浆中，固体所带的热量使矿浆升温，有效利用了微波加热的能量，减少了加热蒸汽的用量，降低了加温浸出的成本；
(4)微波强化浸出中，微波是对矿浆直接加热，由于水的吸波特性好，优先加热水，矿石升温速度慢，且升温小于摄氏100度，微波选择性加热使矿石产生裂纹的性能不能被利用，微波强化浸出的效果不明显。本发明直接对矿石加热，升温速度快，温度高，矿石裂纹明显，后来浸出效果明显，同时微波加热的矿石量减少，成本也大幅度降低。
(5)选矿、微波加热、加温浸出相结合，充分利用微波选择性加热的特性，提高了难浸出固体包裹体氧化铜矿的浸出率，显著提高了铜的回收率。
附图说明
图1为本发明的原则流程图。
具体实施方式
本领域技术人员将会理解，下列实施例仅用于说明本发明，而不应视为限定本发明的范围。实施例中未注明具体技术或条件者，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者，均 为可以通过购买获得的常规产品。
实施例一：
原料：含铜品位1.5％，氧化率大于95％，游离氧化铜矿中铜的分布率小于40％，褐铁矿、赤铁矿、黑云母包裹的铜的分布率60％的固体包裹体氧化铜矿石。
(1)碎矿和磨矿，磨矿细度为-0.074mm质量百分含量占70％％，磨矿后的矿浆质量百分浓度35％％，采用磁感应强度为1.6T的强磁场磁选机磁选回收包裹铜的铁质和黑云母矿物获得磁选精矿，并对磁选精矿过滤，滤液返回磁选作业，同时获得含游离氧化铜的磁选尾矿；
(2)将磁选精矿采用连续化工业微波炉干燥和加热，加热温度达到摄氏450度时，保温15分钟，获得微波加热含铜包裹体物料，磁选精矿干燥所产生的蒸汽用于补充加温磁选尾矿矿浆；
(3)将微波加热含铜包裹体物料与常温磁选尾矿矿浆混合，使包裹体矿粒发生水淬，并使矿浆获得加温，将混合矿浆引入搅拌桶，加入硫酸至pH值1～1.5，同时引入蒸汽继续加热，在摄氏50度～60度的条件下搅拌浸出120分钟；
(4)对浸出的矿浆进行固液分离，萃取电积获得电积铜，固液分离浸出渣为尾矿。
铜的综合回收率为90％。
实施例二：
原料：含铜品位1.0％，氧化率大于95％，游离氧化铜矿中铜的分布率小于40％，褐铁矿、赤铁矿、黑云母包裹的铜的分布率53％的固体包裹体氧化铜矿石。
(1)首先进行碎矿和磨矿，磨矿细度为-0.074mm质量百分含量占75％，磨矿后的矿浆质量百分浓度40％，采用磁感应强度为1.3T的强磁场磁选机磁选回收包裹铜的铁质和黑云母矿物获得磁选精矿，并对磁选精矿过滤，滤液返回磁选作业，同时获得含游离氧化铜的磁选尾矿；
(2)将磁选精矿采用连续化工业微波炉干燥和加热，加热温度达到摄氏450度时，保温15分钟，获得微波加热含铜包裹体物料，磁选精矿干燥所产生的蒸汽用于补充加温磁选尾矿矿浆；
(3)将微波加热含铜包裹体物料与常温磁选尾矿矿浆混合，使包裹体矿粒发生水淬，并使矿浆获得加温，将混合矿浆引入搅拌桶，加入硫酸至pH值1～ 1.5，同时引入蒸汽继续加热，在摄氏50度～60度的条件下搅拌浸出100分钟；
(4)对浸出矿浆进行固液分离，萃取电积获得电积铜，固液分离浸出渣为尾矿。
铜的综合回收率为84％。
实施例三：
原料：含铜品位0.8％，氧化率大于95％，游离氧化铜矿中铜的分布率小于40％，褐铁矿、赤铁矿、黑云母包裹的铜的分布率50％的固体包裹体氧化铜矿石。
(1)碎矿和磨矿，磨矿细度为-0.074mm质量百分含量占80％，磨矿后的矿浆质量百分浓度38％，采用磁感应强度为1.0T的强磁场磁选机磁选回收包裹铜的铁质和黑云母矿物获得磁选精矿，并对磁选精矿过滤，滤液返回磁选作业，同时获得含游离氧化铜的磁选尾矿，磁选精矿干燥所产生的蒸汽用于补充加温磁选尾矿矿浆；
(2)将磁选精矿采用连续化工业微波炉干燥和加热，加热温度达到摄氏400度时，保温10分钟，获得微波加热含铜包裹体物料；
(3)将微波加热含铜包裹体物料与常温磁选尾矿矿浆混合，使包裹体矿粒发生水淬，并使矿浆获得加温，将混合矿浆引入搅拌桶，加入硫酸至pH值1～1.5，同时引入蒸汽继续加热，在摄氏50度～60度的条件下搅拌浸出90分钟；
(4)对浸出矿浆进行固液分离，萃取电积获得电积铜，固液分离浸出渣为尾矿。
铜的综合回收率为82％。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (2)

  1. 一种固体包裹体氧化铜矿选冶联合回收利用的方法，其特征在于包括以下步骤：
    (1)采用含铜品位0.8％～1.5％，氧化率大于95％，游离氧化铜矿中铜的分布率小于40％，褐铁矿、赤铁矿、黑云母包裹的铜的分布率50％～60％的固体包裹体氧化铜矿石，首先进行碎矿和磨矿，磨矿细度为-0.074mm质量百分含量占70％～80％，磨矿后的矿浆质量百分浓度35％～40％，采用磁选机磁选回收包裹铜的铁质和黑云母矿物获得磁选精矿，并对磁选精矿过滤，滤液返回磁选作业，同时获得含游离氧化铜的磁选尾矿；
    (2)将步骤(1)获得磁选精矿采用连续化工业微波炉干燥和加热，加热温度达到摄氏400度～450度时，保温10分钟～15分钟，获得微波加热含铜包裹体物料，磁选精矿干燥所产生的蒸汽用于补充磁选尾矿矿浆的加温；
    (3)将步骤(2)获得的微波加热含铜包裹体物料与步骤(1)获得的常温磁选尾矿矿浆混合，使包裹体矿粒发生水淬，并使矿浆获得加温，将混合矿浆引入搅拌桶，加入硫酸至pH值1～1.5，同时引入蒸汽继续加热，在摄氏50度～60度的条件下搅拌浸出90分钟～120分钟；
    (4)对步骤(3)完成浸出的矿浆进行固液分离，萃取电积获得电积铜，固液分离浸出渣为尾矿。
  2. 根据权利要求1所述的固体包裹体氧化铜矿选冶联合回收利用的方法，其特征在于所述的磁选机为强磁场磁选机，磁感应强度为1.0T～1.6T。
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