WO2020155232A1 - Egta和shmp协同抑制用于菱镁矿浮选脱钙的方法 - Google Patents
Egta和shmp协同抑制用于菱镁矿浮选脱钙的方法 Download PDFInfo
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- WO2020155232A1 WO2020155232A1 PCT/CN2019/075794 CN2019075794W WO2020155232A1 WO 2020155232 A1 WO2020155232 A1 WO 2020155232A1 CN 2019075794 W CN2019075794 W CN 2019075794W WO 2020155232 A1 WO2020155232 A1 WO 2020155232A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
Definitions
- the invention relates to the technical field of magnesite beneficiation and purification technology, in particular to a method for synergistic inhibition of EGTA and SHMP for magnesite flotation decalcification.
- CaO in magnesite is mainly contained in impurity mineral dolomite (CaMg(CO 3 ) 2 ).
- the main inhibitor used for the decalcification of magnesite is sodium hexametaphosphate.
- Sodium hexametaphosphate has less inhibitory effect on magnesite monominerals and greater inhibition on dolomite monominerals.
- a chelating agent with strong selectivity to calcium ions which can form a chelate with Ca 2+ in the raw ore slurry, reduce the amount of Ca 2+ adsorbed by magnesite, and use sodium hexametaphosphate as an inhibitor. Under the separation system, it is imperative to increase the recovery rate of magnesite.
- the purpose of the present invention is to provide a method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation, according to the combination of inhibitor EGTA (ethylene glycol bis(2-aminoethyl ether) tetraacetic acid) in different proportions + Under the dosage of SHMP (sodium hexametaphosphate), the difference in floatability of impurity mineral dolomite in magnesite and magnesite can remove calcium minerals in magnesite and improve the quality of magnesite. Low-grade calcium magnesite beneficiation decalcification provides a new agent.
- EGTA ethylene glycol bis(2-aminoethyl ether) tetraacetic acid
- SHMP sodium hexametaphosphate
- the method for decalcification of magnesite flotation with EGTA and SHMP synergistic inhibition of the present invention includes grinding, slurry adjustment, and rough flotation decalcification;
- the inhibitor EGTA solution is added to the magnesite slurry for slurry adjustment;
- the inhibitor SHMP is added to the magnesite slurry whose pH is adjusted to 10-12, and the subsequent positive flotation rough decalcification is performed.
- the inhibitor EGTA solution is an inhibitor solution with a mass concentration of 0.5-1.5 g/L prepared by using deionized water with a pH of 10-12.
- the inhibitor SHMP can be formulated into an inhibitor SHMP solution for use, and the mass concentration of the inhibitor SHMP solution is preferably 1.0-2.5 g/L.
- the high-calcium and low-grade magnesite is crushed and ball-milled to obtain magnesite powder; wherein, in the magnesite powder, the mass of the magnesite powder with a particle size of ⁇ 74 ⁇ m accounts for 75-85% of the total mass of the magnesite powder.
- said low-grade calcium magnesite Said grinding, said low-grade calcium magnesite, its main component and various ingredients in percent by weight MgO, 20 ⁇ 30%, CaO is 20 ⁇ 30%, SiO 2 0 to 0.5%.
- the slurry adjustment is specifically:
- the flotation equipment is preferably a hanging trough flotation machine with a rotation speed of 1600-1900 rpm.
- the amount of the inhibitor EGTA in the magnesite slurry is preferably 50 mg/L.
- EGTA and SHMP of the present invention are used together as inhibitors for the process of decalcification of magnesite flotation.
- the NaOH is preferably an aqueous NaOH solution with a mass fraction of 1 to 5%.
- the amount of the inhibitor sodium hexametaphosphate based on the amount of the magnesite slurry is preferably 40 mg/L.
- the stirring is uniform, the stirring speed is 1600-1900 rpm, and the stirring time is 2-5 min.
- the pH value is preferably 11.
- the rotation speed of the positive flotation device is 1600-1900 rpm, preferably 1800 rpm, and the positive flotation time is preferably 3-5 min.
- the collector sodium oleate is preferably an aqueous sodium oleate solution with a molar concentration of 0.01-0.05 mol/L.
- the amount of the collector sodium oleate in the amount of the magnesite slurry is preferably 120 mg/L.
- the main components and individual components of the low-calcium magnesite concentrate are MgO 47.5 to 48.5%, SiO 2 ⁇ 0.3%, and CaO ⁇ 0.6% by weight.
- the EGTA and SHMP of the present invention synergistically inhibit the method for decalcification of magnesite flotation, the recovery rate of the low-calcium magnesite concentrate is 70-85% by weight, and the MgO in the low-calcium magnesite concentrate The recovery rate is 65-75% by weight.
- the method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation of the present invention has the following beneficial effects:
- the present invention develops the use of a new inhibitor EGTA. Because the new inhibitor EGTA has strong selectivity for calcium ions in the solution, it can generate calcium-containing complexes, thereby reducing the effect of magnesite on calcium ions in the solution. Adsorption reduces the inhibition of magnesite by sodium hexametaphosphate inhibitor. Compared with adding sodium hexametaphosphate as the inhibitor, adding EGTA+sodium hexametaphosphate can significantly increase the recovery rate of magnesite in the concentrate. Finally, a magnesite concentrate with an MgO grade greater than 47% and a recovery rate of 80-90% can be obtained.
- the ore processed by the method of the present invention is of low grade and the content of CaO in the raw ore is high; the obtained magnesite concentrate can reach the special grade standard (YB321 ⁇ 81) of the metallurgical industry, namely MgO ⁇ 47.00 %, SiO 2 ⁇ 0.30%, CaO ⁇ 0.8%.
- the new inhibitor EGTA (ethylene glycol bis(2-aminoethyl ether) tetraacetic acid) in the present invention is a complexing agent with strong calcium selectivity. It is chemically mainly used to measure the solution in the presence of magnesium ions.
- Fig. 1 is a schematic diagram of the process flow of the method for synergistic inhibition of EGTA and SHMP in Example 1 of the present invention for decalcification by flotation of magnesite.
- Figure 2 is the XRD pattern of the raw material magnesite of the present invention.
- the high-calcium and low-grade magnesite used is Shuidonggou magnesite in Kuandian, Liaoning.
- the elemental composition of the high-calcium and low-grade magnesite is analyzed by X-ray fluorescence spectrometry.
- the main components are The weight percentages are: MgO is 33.58%, SiO 2 is 0.27%, CaO is 15.17%, and the balance is CO 2 and unavoidable impurities; the XRD pattern is shown in Figure 2.
- the inhibitors EGTA ethylene glycol bis(2-aminoethyl ether) tetraacetic acid
- SHMP sodium hexametaphosphate
- All reagents used in the experiment were prepared with deionized water to prepare aqueous solutions of corresponding concentrations.
- FIG. 1 A method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is shown in Fig. 1, and includes the following steps:
- the high-calcium and low-grade magnesite raw materials are crushed and ball milled to obtain magnesite powder; among them, the mass of magnesite powder with a size of less than 74 ⁇ m accounts for 75% of the total mass of magnesite powder ;
- Step 2 Mix the pulp
- the main components of the low-calcium magnesite concentrate are 47.23% by weight of MgO, 0.25% of SiO 2 and 0.59% of CaO; the MgO in the low-calcium magnesite concentrate accounts for the total MgO in the raw material. 80.25% of weight.
- FIG. 1 A method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is shown in Fig. 1, and includes the following steps:
- the high-calcium and low-grade magnesite raw materials are crushed and ball milled to obtain magnesite powder; among them, the mass of magnesite powder with a size of less than 74 ⁇ m accounts for 80% of the total mass of magnesite powder ;
- Step 2 Mix the pulp
- the main components of the low-calcium magnesite concentrate are 48.13% by weight of MgO, 0.14% of SiO 2 and 0.61% of CaO; the MgO in the low-calcium magnesite concentrate accounts for the total MgO in the raw material. 80.25% of weight.
- FIG. 1 A method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is shown in Fig. 1, and includes the following steps:
- the high-calcium and low-grade magnesite raw materials are crushed and ball milled to obtain magnesite powder; among them, the mass of magnesite powder with a particle size of less than 74 ⁇ m accounts for 85% of the total mass of magnesite powder ;
- Step 2 Mix the pulp
- the main components of the low-calcium magnesite concentrate are 47.73% by weight of MgO, 0.22% of SiO 2 and 0.19% of CaO; the MgO in the low-calcium magnesite concentrate accounts for the total MgO in the raw material. 81.25% of weight.
- FIG. 1 A method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is shown in Fig. 1, and includes the following steps:
- the high-calcium and low-grade magnesite raw materials are crushed and ball milled to obtain magnesite powder; among them, the mass of magnesite powder with a size of less than 74 ⁇ m accounts for 83% of the total mass of magnesite powder ;
- Step 2 Mix the pulp
- the main components of the low-calcium magnesite concentrate are 48.05% by weight of MgO, 0.25% of SiO 2 and 0.39% of CaO; the MgO in the low-calcium magnesite concentrate accounts for the total MgO in the raw material. 87.69% of weight.
- a method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is the same as in Example 2, except that in the magnesite powder, the mass of the magnesite powder whose size is less than 74 ⁇ m accounts for the total magnesite 75% of the quality of the ore powder; the main components of the obtained low-calcium magnesite concentrate are 48.61% by weight of MgO, 0.21% of SiO 2 and 0.27% of CaO; the MgO in the low-calcium magnesite concentrate accounts for 86.26% of the total weight of MgO in the raw materials.
- a method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is the same as in Example 3, except that in the magnesite powder, the mass of the magnesite powder with a particle size of less than 74 ⁇ m accounts for the total magnesite 80% of the quality of the ore powder; the main components of the obtained low-calcium magnesite concentrate are 47.91% by weight of MgO, 0.11% of SiO 2 and 0.29% of CaO; the MgO in the low-calcium magnesite concentrate accounts for 84.26% of the total weight of MgO in the raw materials.
- a method for synergistic inhibition of EGTA and SHMP for decalcification of magnesite flotation is the same as in Example 4, the difference is that in the magnesite powder, the mass of the magnesite powder whose size is less than 74 ⁇ m accounts for the total magnesite 75% of the quality of the ore powder; the main components of the obtained low-calcium magnesite concentrate are 49.01% by weight of MgO, 0.21% of SiO 2 and 0.07% of CaO; the MgO in the low-calcium magnesite concentrate accounts for 89.06% of the total weight of MgO in the raw materials.
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Abstract
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,包括磨矿、调浆、正浮选粗选脱钙;在调浆中,将抑制剂EGTA溶液加入菱镁矿矿浆中;在正浮选粗选脱钙中,将抑制剂SHMP加入pH值为10~12的菱镁矿矿浆中,加入捕收剂、起泡剂进行正浮选粗选脱钙。该方法利用菱镁矿及杂质矿物白云石在EGTA和SHMP协同作用下存在的可浮性差异,将菱镁矿中的钙矿物脱除,提高了菱镁矿品质。
Description
本发明涉及菱镁矿选矿提纯工艺技术领域,具体涉及一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法。
在菱镁矿选矿提纯过程中,降低CaO含量是提高菱镁矿品质的关键。菱镁矿中的CaO主要包为在杂质矿物白云石(CaMg(CO
3)
2)中。目前,针对菱镁矿脱钙主要采用的抑制剂为六偏磷酸钠,六偏磷酸钠对菱镁矿单矿物抑制作用较小,对白云石单矿物抑制作用较大,但由于在浮选过程中菱镁矿和白云石矿物的溶解导致大量镁、钙离子溶解到矿浆中,且钙镁离子物理化学性质相近,导致溶液中的钙离子会吸附到菱镁矿表面,促使菱镁矿和白云石表面性质趋同,从而使菱镁矿也受到六偏磷酸钠的抑制,导致菱镁矿回收率较低,增加浮选分离难度。因此,发现一种对钙离子选择性强的螯合剂,能够和原矿矿浆中的Ca
2+生成螯合物,减少菱镁矿对Ca
2+吸附量,在六偏磷酸钠为抑制剂的浮选体系下,提高菱镁矿的回收率是势在必行的。
发明内容
本发明的目的是提供一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,根据在不同配比组合抑制剂EGTA(乙二醇双(2-氨基乙基醚)四乙酸)+SHMP(六偏磷酸钠)的用量下,菱镁矿及菱镁矿中杂质矿物白云石存在的可浮性差异,将菱镁矿中的钙矿物脱除,提高菱镁矿品质,为高钙低品位菱镁矿选矿脱钙提供新的药剂。
本发明的一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,包括磨矿、调浆、正浮选粗选脱钙;
所述的调浆中,将抑制剂EGTA溶液加入菱镁矿矿浆中,进行调浆;
所述的正浮选粗选脱钙中,将抑制剂SHMP加入调节pH值为10~12的菱镁矿矿浆中,进行后续正浮选粗选脱钙。
所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,按固液比,EGTA:菱镁矿矿浆=(40~80)mg:1L,按固液比,SHMP:菱镁矿矿浆=(30~50)mg:1L;其中,菱镁矿矿浆中,菱镁矿粉的质量浓度为20~40%。
所述的抑制剂EGTA溶液为使用pH值为10~12去离子水配制而成的质量浓度为0.5~1.5g/L的抑制剂溶液。
所述的抑制剂SHMP可以配制成抑制剂SHMP溶液使用,抑制剂SHMP溶液的质量浓度优选为1.0~2.5g/L。
所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,所述的磨矿为:
将高钙低品位菱镁矿破碎,球磨,得到菱镁矿粉;其中,菱镁矿粉中,粒级<74μm的菱镁矿粉的质量占总菱镁矿粉质量的75~85%。
所述的磨矿中,所述的高钙低品位菱镁矿,其主要成分及各个成分按重量百分比为MgO为20~30%,CaO为20~30%,SiO
2为0~0.5%。
所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,所述的调浆,具体为:
将菱镁矿粉置于浮选设备中,加入去离子水和抑制剂EGTA溶液,并混合均匀,进行调浆,得到质量浓度为20~40%的菱镁矿矿浆。
所述的调浆中,所述的浮选设备优选为挂槽式浮选机,转速为1600~1900rpm。
所述的调浆中,所述的抑制剂EGTA的用量占菱镁矿矿浆量优选为50mg/L。
所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,所述的正浮选粗选脱钙,具体为:
1)室温下,向菱镁矿矿浆中,加入NaOH,调节pH值至10~12后,搅拌均匀,得到pH值为10~12的菱镁矿矿浆;
2)向pH值为10~12的菱镁矿矿浆中,加入抑制剂SHMP,混合均匀后,加入捕收剂油酸钠,搅拌均匀,然后进行正浮选粗选脱钙,得到低钙菱镁矿精矿;其中,按固液比,捕收剂油酸钠水溶液中捕收剂油酸钠:菱镁矿矿浆=(100~140)mg:1L。
本发明的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,EGTA和SHMP共同作为抑制剂,用于菱镁矿浮选脱钙工艺。
所述的正浮选粗选脱钙中,所述的NaOH优选为质量分数为1~5%的NaOH水溶液。
所述的正浮选粗选脱钙中,所述的抑制剂六偏磷酸钠的用量占菱镁矿矿浆量优选为40mg/L。
所述的正浮选粗选脱钙中,所述的搅拌均匀,搅拌速率为1600~1900rpm,搅拌时间为2~5min。
所述的正浮选粗选脱钙中,所述的pH值优选为11。
所述的正浮选粗选脱钙中,正浮选设备的转速为1600~1900rpm,优选为1800rpm,正浮选时间优选为3~5min。
所述的正浮选粗选脱钙中,所述的捕收剂油酸钠优选为摩尔浓度为0.01~0.05mol/L的油酸钠水溶液。
所述的正浮选粗选脱钙中,所述的捕收剂油酸钠用量占菱镁矿矿浆量优选为120mg/L。
所述的正浮选粗选脱钙中,在加入捕收剂油酸钠后,再加入起泡剂,搅拌均匀,最后进行正浮选粗选脱钙,所述的起泡剂优选为2号油,按固液比,2号油:菱镁矿矿浆=(4~6)mg:1L。
所述的正浮选粗选脱钙中,所述的低钙菱镁矿精矿主要成分及各个成分按重量百分比为MgO 47.5~48.5%,SiO
2≤0.3%,CaO≤0.6%。
本发明的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,低钙菱镁矿精矿的回收率按重量百分比为70~85%,低钙菱镁矿精矿中的MgO回收率按重量百分比为65~75%。
本发明的一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,相比于现有技术,其有益效果在于:
1、本发明开发了新的抑制剂EGTA的使用,由于新的抑制剂EGTA对溶液中钙离子含选择性强,能够生成含钙络合物,从而减少了菱镁矿对溶液中钙离子的吸附,降低了六偏磷酸钠抑制剂对菱镁矿的抑制,相比于只加六偏磷酸钠为抑制剂时,添加EGTA+六偏磷酸钠能显著提高精矿中菱镁矿的回收率。最终可获得MgO品位大于47%,回收率80~90%的菱镁矿精矿。
2、本发明的方法与现有技术相比,所处理的矿石品位低,原矿中CaO的含量高;获得的菱镁矿精矿可达到冶金工业特级标准(YB321~81),即MgO≥47.00%、SiO
2≤0.30%、CaO≤0.8%。
3、本发明中新的抑制剂EGTA(乙二醇双(2-氨基乙基醚)四乙酸)一种钙选择性极强的络合剂,化学上主要用于在镁离子存在时测量溶液中钙离子的含量的滴定药剂,由于EGTA可以和钙离子生成亲水性络合物,因此,将其作为菱镁矿浮选脱钙过程中阻止菱镁矿对矿浆溶液中钙离子吸附的药剂,从而提高菱镁矿的浮选回收率,为低品位菱镁矿选矿脱钙提供了一种新的抑制药剂。
图1为本发明实施例1的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,其工艺流程示意图。
图2为本发明的原料菱镁矿的XRD图。
下面结合实施例对本发明作进一步的详细说明。
以下实施例中,所用的高钙低品位菱镁矿为辽宁宽甸水洞沟菱镁矿,采用X射线荧光光谱分析仪器对高钙低品位菱镁矿的元素成分进行分析,其主要成分按重量百分比为:MgO为 33.58%,SiO
20.27%,CaO为15.17%,余量为CO
2和不可避免的杂质;其XRD图见图2。所用抑制剂EGTA(乙二醇双(2-氨基乙基醚)四乙酸)和SHMP(六偏磷酸钠)为分析纯,捕收剂油酸钠为化学纯,pH值调整剂氢氧化钠为分析纯。试验中所用试剂均用去离子水配制成相应浓度的水溶液备用。
实施例1
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其工艺流程示意图见图1,包括以下步骤:
步骤1:磨矿
将高钙低品位菱镁矿原料进行破碎,球磨,得到菱镁矿粉;其中,菱镁矿粉中,粒级为小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的75%;
步骤2:调浆
(1)将NaOH加入去离子水中,得到pH值为10的去离子水,用pH值为10的去离子水配制,得到质量浓度为0.5g/L;
(2)将粒级为小于74μm且占总菱镁矿粉质量的75%的菱镁矿粉置于挂槽式浮选机中,加入去离子水和抑制剂EGTA溶液,其中,按固液比,抑制剂EGTA:菱镁矿矿浆=40mg:1L,并混合均匀,进行调浆,得到菱镁矿矿浆;其中,菱镁矿矿浆中菱镁矿的质量浓度为20%;
步骤3:正浮选粗选脱钙
室温下,首先向菱镁矿矿浆加入质量分数为3%的NaOH水溶液,调节pH值至11后,搅拌2min,至矿浆均匀,得到pH值为11的菱镁矿矿浆;
向pH值为11的菱镁矿矿浆中,先加入质量浓度为1mg/L的抑制剂六偏磷酸钠水溶液,搅拌均匀后,加入油酸钠水溶液摩尔浓度为0.05mol/L的捕收剂油酸钠水溶液,其中,六偏磷酸钠加入量占菱镁矿矿浆量为30mg/L,油酸钠加入量占菱镁矿矿浆量为100mg/L,搅拌2min,然后加入起泡剂2号油,2号油加入量占菱镁矿矿浆量为5mg/L,搅拌2min,最后进行3min正浮选粗选脱钙,得到低钙菱镁矿精矿。试验过程中,设定浮选机转速1800r/min。
本实施例中,低钙菱镁矿精矿的主要成分按重量百分比为MgO为47.23%,SiO
2为0.25%,CaO为0.59%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的80.25%。
实施例2
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其工艺流程示意图见图1,包括以下步骤:
步骤1:磨矿
将高钙低品位菱镁矿原料进行破碎,球磨,得到菱镁矿粉;其中,菱镁矿粉中,粒级为 小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的80%;
步骤2:调浆
(1)将NaOH加入去离子水中,得到pH值为11的去离子水,用pH值为11的去离子水配制,得到质量浓度为1g/L;
(2)将粒级为小于74μm且占总菱镁矿粉质量的80%的菱镁矿粉置于挂槽式浮选机中,加入去离子水和抑制剂EGTA溶液,其中,按固液比,抑制剂EGTA:菱镁矿矿浆=50mg:1L,并混合均匀,进行调浆,得到菱镁矿矿浆;其中,菱镁矿矿浆中菱镁矿的质量浓度为20%;
步骤3:正浮选粗选脱钙
室温下,首先向菱镁矿矿浆加入质量分数为3%的NaOH水溶液,调节pH值至10后,搅拌2min,至矿浆均匀,得到pH值为10的菱镁矿矿浆;
向pH值为11的菱镁矿矿浆中,先加入质量浓度为1.5mg/L的抑制剂六偏磷酸钠水溶液,搅拌均匀后,加入油酸钠水溶液摩尔浓度为0.05mol/L的捕收剂油酸钠水溶液,其中,六偏磷酸钠加入量占菱镁矿矿浆量为40mg/L,油酸钠加入量占菱镁矿矿浆量为110mg/L,搅拌2min,然后加入起泡剂2号油,2号油加入量占菱镁矿矿浆量为6mg/L,搅拌2min,最后进行3min正浮选粗选脱钙,得到低钙菱镁矿精矿。试验过程中,设定浮选机转速1700r/min。
本实施例中,低钙菱镁矿精矿的主要成分按重量百分比为MgO为48.13%,SiO
2为0.14%,CaO为0.61%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的80.25%。
实施例3
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其工艺流程示意图见图1,包括以下步骤:
步骤1:磨矿
将高钙低品位菱镁矿原料进行破碎,球磨,得到菱镁矿粉;其中,菱镁矿粉中,粒级为小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的85%;
步骤2:调浆
(1)将NaOH加入去离子水中,得到pH值为12的去离子水,用pH值为12的去离子水配制,得到质量浓度为1g/L;
(2)将粒级为小于74μm且占总菱镁矿粉质量的85%的菱镁矿粉置于挂槽式浮选机中,加入去离子水和抑制剂EGTA溶液,其中,按固液比,抑制剂EGTA:菱镁矿矿浆=60mg:1L,并混合均匀,进行调浆,得到菱镁矿矿浆;其中,菱镁矿矿浆中菱镁矿的质量浓度为25%;
步骤3:正浮选粗选脱钙
室温下,首先向菱镁矿矿浆加入质量分数为4%的NaOH水溶液,调节pH值至12后, 搅拌2min,至矿浆均匀,得到pH值为12的菱镁矿矿浆;
向pH值为12的菱镁矿矿浆中,先加入质量浓度为2mg/L的抑制剂六偏磷酸钠水溶液,搅拌均匀后,加入油酸钠水溶液摩尔浓度为0.06mol/L的捕收剂油酸钠水溶液,其中,六偏磷酸钠加入量占菱镁矿矿浆量为50mg/L,油酸钠加入量占菱镁矿矿浆量为120mg/L,搅拌2min,然后加入起泡剂2号油,2号油加入量占菱镁矿矿浆量为4mg/L,搅拌2min,最后进行3min正浮选粗选脱钙,得到低钙菱镁矿精矿。试验过程中,设定浮选机转速1600r/min。
本实施例中,低钙菱镁矿精矿的主要成分按重量百分比为MgO为47.73%,SiO
2为0.22%,CaO为0.19%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的81.25%。
实施例4
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其工艺流程示意图见图1,包括以下步骤:
步骤1:磨矿
将高钙低品位菱镁矿原料进行破碎,球磨,得到菱镁矿粉;其中,菱镁矿粉中,粒级为小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的83%;
步骤2:调浆
(1)将NaOH加入去离子水中,得到pH值为11的去离子水,用pH值为11的去离子水配制,得到质量浓度为1.5g/L;
(2)将粒级为小于74μm且占总菱镁矿粉质量的83%的菱镁矿粉置于挂槽式浮选机中,加入去离子水和抑制剂EGTA溶液,其中,按固液比,抑制剂EGTA:菱镁矿矿浆=70mg:1L,并混合均匀,进行调浆,得到菱镁矿矿浆;其中,菱镁矿矿浆中菱镁矿的质量浓度为35%;
步骤3:正浮选粗选脱钙
室温下,首先向菱镁矿矿浆加入质量分数为4%的NaOH水溶液,调节pH值至11后,搅拌2min,至矿浆均匀,得到pH值为11的菱镁矿矿浆;
向pH值为11的菱镁矿矿浆中,先加入质量浓度为2.5mg/L的抑制剂六偏磷酸钠水溶液,搅拌均匀后,加入油酸钠水溶液摩尔浓度为0.06mol/L的捕收剂油酸钠水溶液,其中,六偏磷酸钠加入量占菱镁矿矿浆量为40mg/L,油酸钠加入量占菱镁矿矿浆量为130mg/L,搅拌2min,然后加入起泡剂2号油,2号油加入量占菱镁矿矿浆量为4mg/L,搅拌2min,最后进行3min正浮选粗选脱钙,得到低钙菱镁矿精矿。试验过程中,设定浮选机转速1900r/min。
本实施例中,低钙菱镁矿精矿的主要成分按重量百分比为MgO为48.05%,SiO
2为0.25%,CaO为0.39%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的87.69%。
实施例5
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,同实施例1,不同之处在于,按固液比,抑制剂EGTA:菱镁矿矿浆=50mg:1L,抑制剂六偏磷酸钠:菱镁矿矿浆=40mg:1L,得到的低钙菱镁矿精矿的主要成分按重量百分比为MgO为47.23%,SiO
2为0.13%,CaO为0.59%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的88.15%。
实施例6
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,同实施例1,不同之处在于,按固液比,抑制剂EGTA:菱镁矿矿浆=60mg:1L,抑制剂六偏磷酸钠:菱镁矿矿浆=40mg:1L,得到的低钙菱镁矿精矿的主要成分按重量百分比为MgO为47.73%,SiO
2为0.09%,CaO为0.39%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的86.35%。
实施例7
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,同实施例1,不同之处在于,按固液比,抑制剂EGTA:菱镁矿矿浆=70mg:1L,抑制剂六偏磷酸钠:菱镁矿矿浆=50mg:1L,得到的低钙菱镁矿精矿的主要成分按重量百分比为MgO为48.23%,SiO
2为0.11%,CaO为0.42%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的89.15%。
实施例8
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,同实施例2,不同之处在于,镁矿粉中,粒级为小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的75%;得到的低钙菱镁矿精矿的主要成分按重量百分比为MgO为48.61%,SiO
2为0.21%,CaO为0.27%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的86.26%。
实施例9
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,同实施例3,不同之处在于,镁矿粉中,粒级为小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的80%;得到的低钙菱镁矿精矿的主要成分按重量百分比为MgO为47.91%,SiO
2为0.11%,CaO为0.29%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的84.26%。
实施例10
一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,同实施例4,不同之处在于,镁矿粉中,粒级为小于74μm的菱镁矿粉的质量占总菱镁矿粉质量的75%;得到的低钙菱镁矿精矿的主要成分按重量百分比为MgO为49.01%,SiO
2为0.21%,CaO为0.07%;低钙菱镁矿精矿中的MgO占原料中MgO总重量的89.06%。
Claims (11)
- 一种EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,包括磨矿、调浆、正浮选粗选脱钙,其特征在于,所述的调浆中,将抑制剂EGTA溶液加入菱镁矿矿浆中,进行调浆;所述的正浮选粗选脱钙中,将抑制剂SHMP加入调节pH值为10~12的菱镁矿矿浆中,进行后续正浮选粗选脱钙;按固液比,EGTA:菱镁矿矿浆=(40~80)mg:1L,按固液比,SHMP:菱镁矿矿浆=(30~50)mg:1L;其中,菱镁矿矿浆中,菱镁矿粉的质量浓度为20~40%。
- 如权利要求1所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的抑制剂EGTA溶液为使用pH值为10~12去离子水配制而成的质量浓度为0.5~1.5g/L的抑制剂溶液。
- 如权利要求1所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的抑制剂SHMP配制成抑制剂SHMP溶液使用,抑制剂SHMP溶液的质量浓度为1.0~2.5g/L。
- 如权利要求1所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,所述的磨矿为:将高钙低品位菱镁矿破碎,球磨,得到菱镁矿粉;其中,菱镁矿粉中,粒级<74μm的菱镁矿粉的质量占总菱镁矿粉质量的75~85%。
- 如权利要求4所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的磨矿中,所述的高钙低品位菱镁矿,其主要成分及各个成分按重量百分比为MgO为20~30%,CaO为20~30%,SiO 2为0~0.5%。
- 如权利要求1所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,所述的调浆,具体为:将菱镁矿粉置于浮选设备中,加入去离子水和抑制剂EGTA溶液,并混合均匀,进行调浆,得到质量浓度为20~40%的菱镁矿矿浆。
- 如权利要求1所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,所述的正浮选粗选脱钙,具体为:1)室温下,向菱镁矿矿浆中,加入NaOH,调节pH值至10~12后,搅拌均匀,得到pH值为10~12的菱镁矿矿浆;2)向pH值为10~12的菱镁矿矿浆中,加入抑制剂SHMP,混合均匀后,加入捕收剂油酸钠,搅拌均匀,然后进行正浮选粗选脱钙,得到低钙菱镁矿精矿;其中,按固液比,捕收剂油酸钠水溶液中捕收剂油酸钠:菱镁矿矿浆=(100~140)mg:1L。
- 如权利要求7所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的正浮选粗选脱钙中,在加入捕收剂油酸钠后,再加入起泡剂,搅拌均匀,最后进行正浮选粗选脱钙,所述的起泡剂为2号油,按固液比,2号油:菱镁矿矿浆=(4~6)mg:1L。
- 如权利要求7或8所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的正浮选粗选脱钙中,所述的NaOH为质量分数为1~5%的NaOH水溶液;所述的搅拌均匀,搅拌速率为1600~1900rpm,搅拌时间为2~5min,正浮选时间为3~5min;所述的捕收剂油酸钠为摩尔浓度为0.01~0.05mol/L的油酸钠水溶液。
- 如权利要求7或8所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的正浮选粗选脱钙中,所述的低钙菱镁矿精矿主要成分及各个成分按重量百分比为MgO 47.5~48.5%,SiO 2≤0.3%,CaO≤0.6%。
- 如权利要求1~7任意一项所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法,其特征在于,所述的EGTA和SHMP协同抑制用于菱镁矿浮选脱钙的方法中,低钙菱镁矿精矿的回收率按重量百分比为70~85%,低钙菱镁矿精矿中的MgO回收率按重量百分比为65~75%。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6007618A (en) * | 1995-07-28 | 1999-12-28 | Thiele Kaolin Company | Kaolin clays which are conditioned prior to removing impurities |
| CN104384027A (zh) * | 2014-11-05 | 2015-03-04 | 北方重工集团有限公司 | 一种菱镁矿石的立式辊终粉磨浮选方法 |
| CN104874484A (zh) * | 2015-04-28 | 2015-09-02 | 中国地质科学院郑州矿产综合利用研究所 | 一种在硫化铜镍矿浮选中降低精矿氧化镁含量的方法 |
| CN106345616A (zh) * | 2016-11-28 | 2017-01-25 | 肃北镁科技耐火材料有限责任公司 | 一种用于菱镁矿浮选去钙药剂及方法 |
| WO2018026796A1 (en) * | 2016-08-04 | 2018-02-08 | Kemira Oyj | Process for mineral ore flotation in the presence of multivalent metal ions |
| CN109847947A (zh) * | 2019-01-31 | 2019-06-07 | 东北大学 | Egta和shmp协同抑制用于菱镁矿浮选脱钙的方法 |
Family Cites Families (8)
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| CN103105456A (zh) * | 2013-01-28 | 2013-05-15 | 云南磷化集团有限公司 | 一种测定磷矿石中高镁含量的方法 |
| CN105693578B (zh) * | 2016-01-15 | 2017-08-04 | 中南大学 | 一种双酰基双异硫氰酸酯衍生物及其制备方法和应用 |
| WO2017196676A1 (en) * | 2016-05-10 | 2017-11-16 | Life Technologies Corporation | Metal chelation post incorporation detection methods |
| CN106000659B (zh) * | 2016-05-23 | 2019-03-08 | 武汉工程大学 | 一种锰镁质低品位磷矿浮选工艺 |
| CN107774454A (zh) * | 2016-08-26 | 2018-03-09 | 陈淑芳 | 一种高钙菱镁矿的浮选方法 |
| CN108722680A (zh) * | 2018-04-28 | 2018-11-02 | 昆明理工大学 | 一种用于高硅高镁的磷矿浮选组合药剂及其使用方法 |
| CN109127114B (zh) * | 2018-09-21 | 2020-08-28 | 大连地拓环境科技有限公司 | 一种低品位菱镁矿综合利用方法 |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6007618A (en) * | 1995-07-28 | 1999-12-28 | Thiele Kaolin Company | Kaolin clays which are conditioned prior to removing impurities |
| CN104384027A (zh) * | 2014-11-05 | 2015-03-04 | 北方重工集团有限公司 | 一种菱镁矿石的立式辊终粉磨浮选方法 |
| CN104874484A (zh) * | 2015-04-28 | 2015-09-02 | 中国地质科学院郑州矿产综合利用研究所 | 一种在硫化铜镍矿浮选中降低精矿氧化镁含量的方法 |
| WO2018026796A1 (en) * | 2016-08-04 | 2018-02-08 | Kemira Oyj | Process for mineral ore flotation in the presence of multivalent metal ions |
| CN106345616A (zh) * | 2016-11-28 | 2017-01-25 | 肃北镁科技耐火材料有限责任公司 | 一种用于菱镁矿浮选去钙药剂及方法 |
| CN109847947A (zh) * | 2019-01-31 | 2019-06-07 | 东北大学 | Egta和shmp协同抑制用于菱镁矿浮选脱钙的方法 |
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