CN101418378A - Method for adding additive agent in reducing roasting process of laterite nickle mine - Google Patents
Method for adding additive agent in reducing roasting process of laterite nickle mine Download PDFInfo
- Publication number
- CN101418378A CN101418378A CNA2008101433442A CN200810143344A CN101418378A CN 101418378 A CN101418378 A CN 101418378A CN A2008101433442 A CNA2008101433442 A CN A2008101433442A CN 200810143344 A CN200810143344 A CN 200810143344A CN 101418378 A CN101418378 A CN 101418378A
- Authority
- CN
- China
- Prior art keywords
- nickel
- laterite
- roasting process
- nickel ore
- nickle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for adding an additive in the reduction roasting process of terra rossa nickel ore. The terra rossa nickel ore is ground to -200 to -100 meshes and is 70 to 90 percent of the mass thereof. A chloride is added into the terra rossa nickel ore as a segregation agent; a sodium compound is added into the terra rossa nickel ore as a promoter; and reduced iron powder is taken as a nucleator and a calcium compound is taken as a sulphur-fixing agent. The adding dosage of the chloride is 0 to 10 percent of the mass of the terra rossa nickel ore; the adding dosage of the sodium compound is 1 to 10 percent of the mass of the terra rossa nickel ore; the adding dosage of the reduced iron powder is 0 to 3 percent of the mass of the terra rossa nickel ore; and the adding dosage of the calcium compound is 1 to 10 percent of the mass of the terra rossa nickel ore. The method is suitable for the reduction roasting process of the terra rossa nickel ore with the high nickel silicate content, can greatly reduce the dosage of calcium chloride, and so on, reduce the equipment corrosion and the environmental pollution caused by chlorine, remarkably improve the metallization degree and the segregation effect during the reduction roasting process of the terra rossa nickel ore, and consequently reach the aim of improving the recovery rate or grade of nickel.
Description
Technical field
The present invention relates to add in a kind of reducing roasting process of laterite nickle mine the method for additive.
Background technology
Red soil nickel ore by nickeliferous rock decay, soak pouring, alteration, enrichment and form, the loose argillaceous ore of forming by hydrous oxides such as iron, aluminium, silicon, nickel, existing explored red soil nickel ore resource is distributed in south, the tropic of Cancer one band more, as Australia, Papua New Guinea, New Caledonia, Indonesia, Philippines and Cuba and other places.Laterite once was the main resource of early stage nickel, and the exploitation of the rich laterite of New Caledonia started from for 19th century not, in the discovery of Sudbury sulphide ores early in the twentieth century people was focused on sight on the sulphide ores.Sulphide ores is undoubted so far as the advantage of the main resource of nickel, yet the laterite of 70% continental rise nickel resources only accounts for 40% of world's nickel output in the world.
In the consumption structure of the primary nickel in the world, stainless steel accounts for 63% of world's nickel consumption, adds steel alloy (5%) and non-ferrous alloy (16%), and metallurgy industry accounts for 84% of nickel total quantity consumed.The nickel that wherein singly is stainless steel industry consumption just accounts for more than 60% of nickel aggregate consumption, and it is the major impetus of present nickel market growth, and the stainless steel production of the coming five years world will be kept 5% annual growth, can corresponding growth to the demand of nickel.Also with 4% speed increment, be higher than world GDP average growth rate (seeing Table 1) output every year of nickel.
The ratio that table 1 nickel sulfide ore and nickel oxide ore are produced nickel changes
| Time | 1950 | 1960 | 1970 | 1980 | 1990 | 2003 | 2010 (predictions) |
| Sulfuration mineral products nickel ratio/% | 85 | 80 | 72 | 65 | 62 | 58 | 49 |
| Oxidation mineral products nickel ratio/% | 15 | 20 | 28 | 35 | 38 | 42 | 51 |
Because the dilution day by day of nickel sulfide ore, and the red soil nickel ore aboundresources, the construction period is short, technology is simple relatively, and under the powerful situation of the current nickel market requirement, the development and use of red soil nickel ore have become popular research.
The main advantage of laterite type nickel development and use is the laterite-type nickel ore aboundresources, and the whole world has 4,100 ten thousand tons of amounts of metal approximately, and it is low to reconnoitre cost; Can have an opencast mining of, mining cost is extremely low; Dressing and smelting process is ripe gradually; The development that stainless steel is produced, to the increase in demand of sintering oxidation nickel, ferronickel or general nickel, and these nickel products are mainly produced by nickel oxide ore; World's laterite type nickel resources mainly is distributed in nearly region of the equator, and is most of near seashore, is convenient to outward transport.
The present treatment process of nickel laterite is in the world concluded roughly three classes: thermal process, wet processing and fiery wet method combined process.Thermal process can also be by different retailoring ferronickel technology and the reduction-sulfurization melting nickel matte technologies of dividing of the product of its output; Wet processing can be divided into ammonia soaking technology and pressurized acid leaching technology by the difference of its infusion solution.Fire wet method combined process is meant that nickel oxide ore adopts the technology of chemical mineral processing method extraction nickel etc. after reducing roasting.Red soil nickel ore can be divided into 2 types, and a kind of is the limonite type, is positioned at the top in mineral deposit, and iron height, nickel are low, and silicon, magnesium are lower, but it is higher to bore content, and this ore should adopt the hydrometallurgical processes processing, and the slag of smelting ferronickel generation is used for the production of steel.Another kind is a noumeite, be positioned at the bottom in mineral deposit, silicon, Mg content are higher, iron, to bore content lower, but nickel content is higher, and this ore should adopt fire metallurgy process to handle, and the slag of producing the ferronickel generation can be used as material of construction and produces chemical fertilizer, and the ore of the transition that mediates can adopt pyrometallurgy, also can adopt hydrometallurgical processes.
Fire reduction melting ferronickel art breading nickel oxide ore is produced ferronickel ferronickel annual production (by nickel) about 250kt, and there are many Ni Anbo smeltery, New Caledonia, the Colombia plug Tuo Sha smeltery, Rome of French nickel company, the smeltery, eight families of SUMITOMO CHEMICAL company etc. in representative manufacturer.The nickel massfraction is 20%～30% in the product that this technology obtains, and the rate of recovery of nickel also can reach 90～95%, be fit to handle various types of nickel oxide ores, and the granularity of going into the stove furnace charge is not had strict requirement yet, but that main drawback is an energy consumption is big.
Utilize the difference of reducing metal (nickel, iron) and other gangue mineral character, developing the pyrogenic process-wet method combined process that has reducing roasting-magnetic separation process, reducing roasting-segregation-ammonia soaking technology, reducing roasting-segregation-floatation process, reducing roasting-magnetic gravity separation technology etc.Smeltery, big rivers and mountains (Oyama Smelter) as metallurgical (Nippon Yakim) company of Japan, main processes be raw ore levigate with fine coal mixing briquetting, nodulizing drying and high temperature reduction roasting, roasted ore group is levigate again, ore pulp carries out ore dressing (gravity treatment and magnetic separation) to be separated and obtains Rhometal product (He Huanhua, China YouSe metallurgy, 2004, the 6th phase).
The maximum characteristics of pyrogenic process-wet method combined process are that production cost is low, and 85% energy in the energy consumption is provided by coal, ton ore deposit consumption coal 160～180kg.And the energy consumption of thermal process electrosmelting is provided by electric energy more than 80%, ton ore deposit power consumption 560～600kWh, and both energy consumption cost price differences are very big, and according to the value calculation of present domestic market, both prices differ 3～4 times.
The expense of the also extremely sensitive grade in raw material nickel of the cost of pyrogenic process-wet method combined process, power charge (electricity charge), fuel and reductive agent (heavy oil, petroleum naphtha, diesel oil, Sweet natural gas, coal and coke) (Xu Qingxin. the past of laterite and following [J]. China YouSe metallurgy, 2005, (6): 1-8.), its key is the reducing roasting operation, the degree of metalization of nickel, iron not only is related to the rate of recovery and the grade of Rhometal, and the roasting process temperature and time directly has influence on the energy consumption and the production cost of whole technology.
For most of laterite-type nickel ores, wherein nickel major part and silicon, the silicic acid nickel and the nickel ferrite based magnetic loaded of iron be combined into complexity, be difficult to dissociate and reduce, for the nickel of prereduction enriched in metals preferably, the reducing roasting process of pyrogenic process-wet method combined process adds segregation agent (chlorizating agent) more and carries out the chlorination segregation, promptly refer in ore, add a certain amount of carbonaceous reducing agent (coal or coke) and chlorizating agent (sodium-chlor or calcium chloride), in the atmosphere of neutrality or week reduction, heat, make valuable metal chloridizing volatilization from ore, and become simultaneously the process of metallic particles at the carbon granule surface reduction, in the hope of the higher metal concentrate of output grade.
But go out to adopt calcium chloride as the segregation agent, not only need higher segregation temperature (more than 1000 ℃), and chlorizating agent consumption (needing 7%～10% as NaCl), reductive agent consumption all need very greatly, the segregation reaction times needs very long (more than the 3h).Select the nickel index as domestic Yuanjiang River nickel minerals preferably in order to obtain, the muriatic consumption of segregation agent has just reached (Chen Xiaoming more than 25%, Zhang Zonghua. Yuanjiang River silicic acid nickel minerals development new technologies pilot-plant test research [J]. non-ferrous metal (ore dressing part), 2007, (3): 25-28.).
Segregation agent muriate consumption strengthens, and has not only increased raw material consumption, causes production cost higher, and can cause the chlorine pollution of environment.In order to reduce the consumption of muriate segregation agent, must preferentially destroy difficult nickel---the structure and the crystal formation of silicic acid nickel, nickel ferrite based magnetic loaded, increase the reactive behavior of nickel.
The present invention is in order to destroy the structure of silicate, wustite, in the segregation agent, add part promotor, as contain sodium, calcic (environmentally safe) compound, make it to form the more stable materials of thermodynamics such as Calucium Silicate powder, displace nickel oxide, make things convenient for the reduction and the enrichment of nickel; And sodium salt easily melts under the high temperature, causes part " liquid phase ", strengthens the mass transfer of reaction process, and in addition, the seepage force of sodium ion is strong, is beneficial to the structure of silicic acid nickel, nickel ferrite based magnetic loaded and the destruction of crystal formation more.
The present invention adds reduced iron powder (product that magnetic separation obtains) at segregation in the agent, can make on the spot that reductive nascent state nickel preferentially condenses upon around it, plays the nucleator effect, be beneficial to the nickel particulate and form and grow up, and part suppresses the reoxidation of nickel.
In addition, when adopting the coal dust of low value to make reductive agent, and the sulfurous gas that easily causes roasting process to discharge is difficult to handle and causes environmental pollution, and the calcium based compound that the present invention added can play solid sulphur effect.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of interpolation consumption is few, effect is remarkable, strengthens the metallization effect of red soil nickel ore in reducing roasting process, reduces the method for adding additive in the reducing roasting process of laterite nickle mine of reagent consumption cost.
In order to solve the problems of the technologies described above, add the method for additive in the reducing roasting process of laterite nickle mine provided by the invention, be ground to-200～-100 orders and account for 70～90% of its quality red soil nickel ore is broken, in red soil nickel ore, add muriate and do the segregation agent, sodium compound is done promotor, reduced iron powder makes nucleator and the calcium compounds is made sulphur-fixing agent, it is characterized in that: by the quality of red soil nickel ore, muriaticly be added in an amount of 0～10%, sodium compound be added in an amount of 1～10%, reduced iron powder be added in an amount of 0～3%, the calcium compounds be added in an amount of 1～10%.
Describedly muriaticly be added in an amount of 0～5%.
Described muriate be in calcium chloride, sodium-chlor, magnesium chloride and the bariumchloride one or more.
Described sodium compound be added in an amount of 2～5%.
Described sodium compound is yellow soda ash, sodium hydroxide or water glass.
Described reduced iron powder be added in an amount of 0～2%.
Described calcium compounds be added in an amount of 3～7%.
Described calcium compounds is one or more in lime carbonate, calcium oxide, the calcium hydroxide.
Adopt the method for adding additive in the reducing roasting process of laterite nickle mine of technique scheme, with the small amount of chloride is that matrix is done the segregation agent, by adding promotor (compounds containing sodium), nucleator (reduced iron powder), sulphur-fixing agent (lime carbonate, calcium oxide, calcium hydroxide etc.) etc. constitute additive, can significantly improve the promoter action of additive in reducing roasting process of laterite nickle mine, improve the reducing degree and increase condensed state reduced nickel grain diameter of nickel, increase the rate of recovery and the grade of nickel in the operations such as follow-up magnetic separation or ammonia soak, can significantly promote the metallization of nickel, improve the rate of recovery of nickel.The prescription of additive is according to the difference of red soil nickel ore character, and maturing temperature changes with the different of time difference.
The present invention is suitable for adding to the reducing roasting process of the high red soil nickel ore of silicic acid nickel proportion, the consumption of reduction calcium chloride that can be by a relatively large margin etc., alleviate corrosion and the environmental pollution of chlorine to equipment, significantly improve degree of metalization and segregation effect in the reducing roasting process of laterite nickle mine, thereby reached the purpose that improves nickel recovery or grade.
In sum, the present invention is that a kind of interpolation consumption is few, effect is remarkable, strengthens the metallization effect of red soil nickel ore in reducing roasting process, reduces the method for adding additive in the reducing roasting process of laterite nickle mine of reagent consumption cost.
Embodiment
The present invention is further specified by the following example, but is not subjected to the restriction of these embodiment.All umbers and percentage ratio all refer to quality except as otherwise herein provided among the embodiment.
Embodiment 1:
Red soil nickel ore contains Ni 1.38%, Fe 32.1%, Mg 12.7%.
Get that 100 parts of red soil nickel ores are broken to be ground to-200 orders and to account for 90%, adds the pelletizing of making 10～15mm behind 6 parts of fine coal and additive (prescription and the consumption are shown in Table 2) mix grinding with ball egg shaper, place retort furnace 900 ℃ of following reducing roastings 2 hours.The reduced calcine that obtains carries out wet ball-milling, and pulp density is 40%, and grinding fineness accounts for 90% for-200 orders; Ore pulp is magnetic separation under 8000 Gausses' the condition in magneticstrength, and the concentrate that obtains contains Ni 4.89%, Fe 79.8%, and the rate of recovery of nickel is 91.5%.
The additive formulations of table 2 embodiment 1 and consumption
| The component title | Particular compound | Consumption, % (with respect to the quality of red soil nickel ore) |
| Muriate | Calcium chloride | 5％ |
| Promotor | Water glass | 5％ |
| Nucleator | Reduced iron powder | 1％ |
| Sulphur-fixing agent | Calcium oxide | 7％ |
Embodiment 2:
The low high magnesium type of iron red soil nickel ore, chemical ingredients contains Ni 1.95%, Fe 15.9%, Mg 17.8%.
Get that 100 parts of red soil nickel ores are broken to be ground to-200 orders and to account for 70%, adds the pelletizing of making 10～15mm behind 5 parts of coking coal and additive (prescription is shown in Table 3 with the consumption) mix grinding with ball egg shaper, the employing rotary kiln was 1100 ℃ of following reducing roastings 1.5 hours.The reduced calcine that obtains carries out wet ball-milling, and pulp density is 50%, and grinding fineness accounts for 80% for-200 orders; Ore pulp is magnetic separation under 9000 Gausses' the condition in magneticstrength, and the concentrate that obtains contains Ni 8.36%, Fe 75.1%, and the rate of recovery of nickel is 95.2%.
The additive formulations of table 3 embodiment 2 and consumption
| The component title | Particular compound | Consumption, % (with respect to the quality of red soil nickel ore) |
| Muriate | Calcium chloride | 1％ |
| Promotor | Yellow soda ash | 3％ |
| Nucleator | Reduced iron powder | 2％ |
| Sulphur-fixing agent | Calcium hydroxide | 6％ |
Embodiment 3:
High ferro is hanged down magnesium type red soil nickel ore, and chemical ingredients contains Ni 0.91%, Fe 47.8%, Mg 17.9%.
Get that 100 parts of red soil nickel ores are broken to be ground to-100 orders and to account for 90%, adds the pelletizing of making 10～15mm behind 12 parts of fine coal and combination segregation agent (prescription is shown in Table 4 with the consumption) mix grinding with ball egg shaper, the employing rotary kiln was 1250 ℃ of following reducing roastings 0.5 hour.The reduced calcine that obtains carries out wet ball-milling, and pulp density is 50%, and grinding fineness accounts for 70% for-400 orders; Ore pulp is magnetic separation under 7000 Gausses' the condition in magneticstrength, and the concentrate that obtains contains Ni 4.78%, Fe 81.9%, and the rate of recovery of nickel is 88.8%.
The additive formulations of table 4 embodiment 3 and consumption
| The component title | Particular compound | Consumption, % (with respect to the quality of red soil nickel ore) |
| Muriate | Calcium chloride | 0％ |
| Promotor | Yellow soda ash | 6％ |
| Nucleator | Reduced iron powder | 1％ |
| Sulphur-fixing agent | Calcium hydroxide | 3％ |
Embodiment 4:
Red soil nickel ore contains Ni 1.38%, Fe 32.1%, Mg 12.7%.
Get that 100 parts of red soil nickel ores are broken to be ground to-200 orders and to account for 90%, adds the pelletizing of making 10～15mm behind 8 parts of fine coal and additive (prescription and the consumption are shown in Table 5) mix grinding with ball egg shaper, place retort furnace 900 ℃ of following reducing roastings 2 hours.The reduced calcine that obtains carries out wet ball-milling, and pulp density is 40%, and grinding fineness accounts for 90% for-200 orders; Ore pulp is magnetic separation under 8000 Gausses' the condition in magneticstrength, and the concentrate that obtains contains Ni 4.89%, Fe 79.8%, and the rate of recovery of nickel is 91.5%.
The additive formulations of table 5 embodiment 4 and consumption
| The component title | Particular compound | Consumption, % (with respect to the quality of red soil nickel ore) |
| Muriate | Sodium-chlor | 10％ |
| Promotor | Water glass | 2％ |
| Nucleator | Reduced iron powder | 0％ |
| Sulphur-fixing agent | Calcium oxide | 7％ |
Embodiment 5:
The low high magnesium type of iron red soil nickel ore, chemical ingredients contains Ni 1.95%, Fe 15.9%, Mg 17.8%.
Get that 100 parts of red soil nickel ores are broken to be ground to-200 orders and to account for 70%, adds the pelletizing of making 10～15mm behind 10 parts of coking coal and additive (prescription is shown in Table 6 with the consumption) mix grinding with ball egg shaper, the employing rotary kiln was 1100 ℃ of following reducing roastings 1.5 hours.The reduced calcine that obtains carries out wet ball-milling, and pulp density is 50%, and grinding fineness accounts for 80% for-200 orders; Ore pulp is magnetic separation under 9000 Gausses' the condition in magneticstrength, and the concentrate that obtains contains Ni 8.36%, Fe 75.1%, and the rate of recovery of nickel is 95.2%.
The additive formulations of table 6 embodiment 5 and consumption
| The component title | Particular compound | Consumption, % (with respect to the quality of red soil nickel ore) |
| Muriate | Magnesium chloride | 8％ |
| Promotor | Sodium hydroxide | 1％ |
| Nucleator | Reduced iron powder | 3％ |
| Sulphur-fixing agent | Calcium hydroxide | 1％ |
Embodiment 6:
High ferro is hanged down magnesium type red soil nickel ore, and chemical ingredients contains Ni 0.91%, Fe 47.8%, Mg 17.9%.
Get that 100 parts of red soil nickel ores are broken to be ground to-100 orders and to account for 90%, adds the pelletizing of making 10～15mm behind 12 parts of fine coal and combination segregation agent (prescription is shown in Table 7 with the consumption) mix grinding with ball egg shaper, the employing rotary kiln was 1250 ℃ of following reducing roastings 0.5 hour.The reduced calcine that obtains carries out wet ball-milling, and pulp density is 50%, and grinding fineness accounts for 70% for-400 orders; Ore pulp is magnetic separation under 7000 Gausses' the condition in magneticstrength, and the concentrate that obtains contains Ni 4.78%, Fe 81.9%, and the rate of recovery of nickel is 88.8%.
The additive formulations of table 7 embodiment 6 and consumption
| The component title | Particular compound | Consumption, % (with respect to the quality of red soil nickel ore) |
| Muriate | Bariumchloride | 3％ |
| Promotor | Yellow soda ash | 10％ |
| Nucleator | Reduced iron powder | 1％ |
| Sulphur-fixing agent | Lime carbonate | 10％ |
Claims (8)
1, adds the method for additive in a kind of reducing roasting process of laterite nickle mine, be ground to-200～-100 orders and account for 70～90% of its quality red soil nickel ore is broken, the agent of interpolation muriate work segregation, sodium compound are done promotor in red soil nickel ore, reduced iron powder makes nucleator and the calcium compounds is made sulphur-fixing agent, it is characterized in that: by the quality of red soil nickel ore, muriaticly be added in an amount of 0～10%, sodium compound be added in an amount of 1～10%, reduced iron powder be added in an amount of 0～3%, the calcium compounds be added in an amount of 1～10%.
2, add the method for additive in the reducing roasting process of laterite nickle mine according to claim 1, it is characterized in that: describedly muriaticly be added in an amount of 0～5%.
3, add the method for additive in the reducing roasting process of laterite nickle mine according to claim 1 and 2, it is characterized in that: described muriate be in calcium chloride, sodium-chlor, magnesium chloride and the bariumchloride one or more.
4, add the method for additive in the reducing roasting process of laterite nickle mine according to claim 1, it is characterized in that: described sodium compound be added in an amount of 2～5%.
5, according to the method for adding additive in claim 1 or the 4 described reducing roasting process of laterite nickle mine, it is characterized in that: described sodium compound is yellow soda ash, sodium hydroxide or water glass.
6, add the method for additive in the reducing roasting process of laterite nickle mine according to claim 1, it is characterized in that: described reduced iron powder be added in an amount of 0～2%.
7, add the method for additive in the reducing roasting process of laterite nickle mine according to claim 1, it is characterized in that: described calcium compounds be added in an amount of 3～7%.
8, according to the method for adding additive in claim 1 or the 7 described reducing roasting process of laterite nickle mine, it is characterized in that: described calcium compounds is one or more in lime carbonate, calcium oxide, the calcium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101433442A CN101418378A (en) | 2008-10-17 | 2008-10-17 | Method for adding additive agent in reducing roasting process of laterite nickle mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101433442A CN101418378A (en) | 2008-10-17 | 2008-10-17 | Method for adding additive agent in reducing roasting process of laterite nickle mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101418378A true CN101418378A (en) | 2009-04-29 |
Family
ID=40629378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101433442A Pending CN101418378A (en) | 2008-10-17 | 2008-10-17 | Method for adding additive agent in reducing roasting process of laterite nickle mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101418378A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701275B (en) * | 2009-11-18 | 2011-07-20 | 昆明理工大学 | Method for preparing nickel iron by using rotary kiln for directly reducing nickel silicate ores |
| CN103526026A (en) * | 2013-09-27 | 2014-01-22 | 泰州永兴合金材料科技有限公司 | Additive for directly reducing nickel laterite ores and application of additive |
| CN105087905A (en) * | 2015-10-10 | 2015-11-25 | 马守栋 | Method for treating transition type and limonite type nickel laterite ore by using industrial pickling waste acid |
| CN106755974A (en) * | 2017-01-23 | 2017-05-31 | 汉中锌业有限责任公司 | A kind of iron vitriol slag freezes off the preparation of knot reducting pellet and its reclaims the process that lead zinc-iron synchronously consolidates sulphur |
| CN107746057A (en) * | 2017-11-18 | 2018-03-02 | 北京科技大学 | A kind of preparation method of ultra-fine molybdenum carbide |
| CN108165733A (en) * | 2018-01-02 | 2018-06-15 | 昆明理工大学 | A kind of method of the more metal synthetical recoveries of nickel, iron, magnesium in silicon magnesium types lateritic nickel ore |
| CN108239698A (en) * | 2016-12-25 | 2018-07-03 | 海门市源美美术图案设计有限公司 | A kind of compound roasting auxiliary agent and the application in the modification of dolomite containing lithium |
| CN108950180A (en) * | 2018-06-25 | 2018-12-07 | 中南大学 | A kind of method that Bayer process red mud reduction roasting mentions iron |
| CN109355492A (en) * | 2018-11-08 | 2019-02-19 | 昆明理工大学 | A method of dilval is prepared using low-grade laterite nickel ore |
| CN112080631A (en) * | 2020-08-03 | 2020-12-15 | 中国恩菲工程技术有限公司 | Method for purifying silicon dioxide from tailings |
-
2008
- 2008-10-17 CN CNA2008101433442A patent/CN101418378A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701275B (en) * | 2009-11-18 | 2011-07-20 | 昆明理工大学 | Method for preparing nickel iron by using rotary kiln for directly reducing nickel silicate ores |
| CN103526026A (en) * | 2013-09-27 | 2014-01-22 | 泰州永兴合金材料科技有限公司 | Additive for directly reducing nickel laterite ores and application of additive |
| CN105087905A (en) * | 2015-10-10 | 2015-11-25 | 马守栋 | Method for treating transition type and limonite type nickel laterite ore by using industrial pickling waste acid |
| CN108239698A (en) * | 2016-12-25 | 2018-07-03 | 海门市源美美术图案设计有限公司 | A kind of compound roasting auxiliary agent and the application in the modification of dolomite containing lithium |
| CN106755974A (en) * | 2017-01-23 | 2017-05-31 | 汉中锌业有限责任公司 | A kind of iron vitriol slag freezes off the preparation of knot reducting pellet and its reclaims the process that lead zinc-iron synchronously consolidates sulphur |
| CN107746057A (en) * | 2017-11-18 | 2018-03-02 | 北京科技大学 | A kind of preparation method of ultra-fine molybdenum carbide |
| CN107746057B (en) * | 2017-11-18 | 2020-07-03 | 北京科技大学 | Preparation method of superfine molybdenum carbide |
| CN108165733A (en) * | 2018-01-02 | 2018-06-15 | 昆明理工大学 | A kind of method of the more metal synthetical recoveries of nickel, iron, magnesium in silicon magnesium types lateritic nickel ore |
| CN108950180A (en) * | 2018-06-25 | 2018-12-07 | 中南大学 | A kind of method that Bayer process red mud reduction roasting mentions iron |
| CN109355492A (en) * | 2018-11-08 | 2019-02-19 | 昆明理工大学 | A method of dilval is prepared using low-grade laterite nickel ore |
| CN112080631A (en) * | 2020-08-03 | 2020-12-15 | 中国恩菲工程技术有限公司 | Method for purifying silicon dioxide from tailings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101418378A (en) | Method for adding additive agent in reducing roasting process of laterite nickle mine | |
| CN101413055B (en) | Process for directly preparing nickel-iron alloy powder from laterite-nickel ore | |
| CN102912111B (en) | Treatment method of oolitic hematite containing phosphorus | |
| CN101073790B (en) | Reduction-mill concentration treatment for different-type red-clay nickel mine | |
| CN101871053B (en) | Method for smelting ferronickel or nismatte with laterite-nickel ore | |
| CN101538645A (en) | Technique for roasting and dressing laterite nickel ore | |
| CN101514401B (en) | Method for efficiently concentrating cobalt and nickel from low-grade nickeliferous laterite ore | |
| CN104195279B (en) | A kind of red soil nickel ore prepares the technique of ferronickel | |
| CN101845530B (en) | Process for producing nickel-containing iron alloy from laterite on fluidized bed | |
| CN102373329B (en) | Method for gathering nickel and iron from laterite-nickel ores | |
| CN102181627B (en) | Method for treating primary low-grade high-phosphorus manganese ore by acid blending curing | |
| CN101418359A (en) | Method for extracting iron and high grade ferro-nickel alloy from laterite nickle mine | |
| CN103555968B (en) | Novel smelting process of cobalt-manganese multi-metal ore | |
| CN104894363B (en) | Method for using low-grade niobium concentrate to produce niobium-iron alloy and rare earth double sulfate salt | |
| CN103757200B (en) | Method for separating and enriching ferronickel from laterite-nickel ore | |
| CN101550483A (en) | Combined flow path processing method of laterite nickel | |
| CN101643858A (en) | High temperature chlorination processing method of lateritic nickel ore | |
| CN103233114A (en) | Method for producing nickel/ferrum from nickel laterite ores | |
| CN102534194A (en) | Method for producing ferronickel from laterite-nickel ore | |
| CN104018008A (en) | Method for producing nickel iron by laterite-nickel ore flash furnace reduction smelting | |
| CN110923441A (en) | Co-Mn multi-metal oxidized ore and seabed multi-metal sulfide combined metallization recovery method | |
| CN103589939A (en) | Method for smelting ferro-nickel through smelting reduction of laterite-nickel ore | |
| CN104120207B (en) | One joins the raw ferriferous method in ore deposit with tin tail iron ore concentrate and the poor assorted ore deposit of high harmful element | |
| CN100478477C (en) | Method for extracting nickel iron alloy from laterite ore | |
| CN103866115B (en) | The preparation of red soil nickel ore single stage method is containing the method for nickel and stainless steel raw material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090429 |