The method of opening loparite concentrate

 

(57) Abstract:

The invention relates to the hydrometallurgical processing of technoeconomically concentrates, and more particularly to the opening of loparite concentrate. The method of opening loparite concentrate includes means of hydrochloric acid leaching at 75-99oWith the separation of the solid residue containing loparite and aegirine from the solution and re-leaching. What's new is that the leaching is carried out in the reactor, soobshayem with the atmosphere through a reflux and in the leaching of use 22-34% solution of hydrochloric acid. The method provides a decomposition of more than 95% of loparite and allows you to simplify hardware design, to reduce acid consumption, reduce energy costs and improve the environmental performance of the process.

The invention relates to the hydrometallurgical processing of technoeconomically concentrates, and more particularly to the opening of loparite concentrate.

There is a method of opening loparite concentrate 28-30% solution of hydrochloric acid at atmospheric pressure, a temperature of 100-105oC for 8-10 hours the Precipitate containing unopened loparite and aegirine goes to the sec the hydrometallurgy of loparite concentrate. "Non-ferrous metals", 2000, No. 10, S. 53).

The disadvantages of this method include the process of opening loparite concentrate at temperatures above 100oWith under boiling hydrochloric acid with a concentration more than 28%. The process under these conditions leads to very high losses of hydrochloric acid, which requires either a compensation acid during the process, or causes a significant reduction in the degree of dissection. In addition, the boiling of the reaction mixture during the opening makes the process very dangerous and requires considerable costs for conducting environmental activities.

The disadvantage of this method is that before re-opening balance opening, it is sent to the division neostrata loparite and aegirine. This requires additional operations for cleaning residue from hydrochloric acid and the use of additional equipment required for gravity separation of aegirine and loparite concentrates.

From the patent of Russia 2149908 known method of decomposition of mineral and technogenic raw materials, including loparite concentrate in 35.5 40% hydrochloric acid at T:W=1:3,4-20 and 70-100oC. When the decomposition concentrationrange residue by filtration and re-treatment with hydrochloric acid.

The disadvantages of this method include the use of highly concentrated hydrochloric acid and carrying out the process at a sufficiently high temperature that the use of hydrochloric acid the above concentrations (concentration NS more than 35%) necessitates the process of decomposition in the autoclave and complicates the instrumentation process. A significant drawback is the high consumption of hydrochloric acid (T:W=1:3,4 - 20), which leads to the need for regeneration of large volumes of high concentration of hydrochloric acid solutions and, accordingly, a large energy cost, and requires a bulky apparatus registration process.

The present invention was based on the task to develop a way of opening loparite concentrate, which operation would be carried out under such conditions as to ensure the reduction of the consumption of hydrochloric acid, reduce energy costs, as well as simplifying the instrumentation process, which is the technical result of the claimed invention.

The technical result is achieved in that in the method of opening loparite concentrate, including his selenocysteine its leaching, what's new is that the leaching is carried out in the reactor, soobshayem with the atmosphere through a reflux, and when the leaching is used 22-34% solution of hydrochloric acid.

Thanks to an opening in the reactor, soobshayem with the atmosphere through a reflux reduction of consumption of hydrochloric acid due to trapping of vapor refrigerator, condensation and return of the acid in the reactor at the opening of loparite concentrate. The use of 22-34% NS also contributes to the high degree of the opening of the concentrate with minimal losses NC. All this and reduces the amount of acid and the simplification of the apparatus registration process.

The proposed method is as follows.

Source loparite concentrate is mixed with the original 22-34% hydrochloric acid and incubated without stirring for at least 2 h at room temperature. After cooling, the suspension is heated with stirring and perform an autopsy concentrate at 70-99oC for 10-15 h at atmospheric pressure. Committed in the reactor pairs NS recovered in the refrigerator, is condensed and returned in the form of hydrochloric acid in the reaction zone. Then WM is the art of solid phase, containing unopened loparite concentrate and aegirine, together again treated with hydrochloric acid.

The claimed range is due to the fact that the use of 22% hydrochloric acid allows you to enjoy working with hydrochloric acid. The duration of the process is somewhat increased, but costs are reduced concentration of acid.

At the same time it allows to carry out the process at temperatures close to 100oC.

The use of more dilute acid will increase the volume of the liquid phase and will require the use of equipment outside the box large volumes or reduce the utilization of the working volume of standard equipment.

Application in the process of opening loparite hydrochloric acid with a concentration above 34% will require additional hardware devices in addition to the back of the fridge for vapor recovery NS, condensation and return of the acid in the reaction zone.

The process of decomposition of loparite under boiling at a temperature above 99oWith will also require additional costs for trapping acids and its return in the process.

Conducting an autopsy of the concentrate at a temperature below Asti equipment.

The proposed solution can be demonstrated by the following examples:

Example 1. Take 1 kg of loparite concentrate and 6.5 l 22% hydrochloric acid. The suspension is heated to 99oC and maintained under stirring for 15 h with return acid in the reaction zone. Then the suspension is filtered to obtain 430 g of wet unopened loparite concentrate, and 6,37 l hydrochloric acid solution containing, g/l: TiO2- 43,0; Nb2O5- 8,9; TA2O5- 0,77); the amount of REE - 36,3; ThO2- 0,55; Fe2O3-1,21. The degree of decomposition concentrate amounted to 70.2%.

Example 2. Take 1 kg of loparite concentrate and 5.4 l 26% hydrochloric acid. The suspension is incubated 4 h at room temperature and heated to 95oAnd again incubated for 12 h with trapping the acid returning it to the reactor. Then the suspension is filtered with getting 285 g wet unopened concentrate and 5.3 l of hydrochloric acid solution containing, g/l: TiO2to 58.9; Nb2O5- 12,2; Ta2O5- 1,06); the amount of REE - 49,8; ThO2- 0,75; Fe2O3-1,7. The degree of decomposition of the concentrate was 79.8%.

Example 3. Take 1 kg of loparite concentrate of example 1 and 4.6 l of 30% hydrochloric stirring was kept for 12 hours Next, the suspension is filtered to obtain 215 g wet unopened concentrate and 4,54 l hydrochloric acid solution containing, g/l: TiO2-73,0; Nb2O5- 15.2 m; Ta2O5-1,3); the amount of REE - 51,5; ThO2- 0,94; Fe2O3e 2.06. The degree of decomposition concentrate amounted to 84.7 per cent.

Example 4. Take 1 kg of loparite concentrate of example 1 and 4.0 l 34% hydrochloric acid. The suspension is incubated at room temperature for 2 h Then heated to 70oAnd stirring was kept for 8 hours Then the suspension is filtered to obtain 150 g wet unopened concentrate and 3.95 l hydrochloric acid solution containing, g/l: TiO2- 88,9; Nb2O5-18,4; Ta2O5-1,6); the amount of REE - 75,2; ThO2-1,14; Fe2O3a-2.5. The degree of decomposition concentrate amounted to 89.6 per cent.

Example 5. Take Sadovskiy concentrate from experiments 1-4 total weight of 1080 g of wet concentrate (or 756 g in terms of dry concentrate with 30% humidity. In the dry product contains 120 g of aegirine and 636 g unopened loparite). This concentrate is treated with 3.0 l 34% hydrochloric acid at 70oC for 10 h, the Suspension was filtered to obtain 3.28 l hydrochloric acid solution containing, g/l: TiO2-60,5 CSO sludge or 247 g in terms of dry weight. It contains 120 g of aegirine and 127 g unopened loparite. Thus, for two degrees of opening of the General degree of decomposition loparite concentrate was 97%.

Example 6. Take 1 kg of loparite concentrate and process it to 3.6 l 34% hydrochloric acid at 70oC and stirring for 5 hours Then the suspension is heated to 95oWith and continue the process for another 10 hours Then the suspension is filtered to obtain 150 g of sediment humidity 35% or 97.5 g in terms of dry weight and 3,55 l hydrochloric acid solution containing, g/l: TiO2-101,1; Nb2O5- 20,9; TA2O5- 1,81; La2O3-85,6; ThO2-1,30; Fe2O3- 2,82. The degree of decomposition concentrate amounted to 92.1%.

From the specific embodiments of the claimed invention for any specialist in this field are obvious possibilities for its realization with the simultaneous solution of the set task. It is also obvious that the invention can be made small changes, but which will not exceed the scope of the invention defined by the following claims.

Saleeby way of opening loparite concentrate easy to reychesta costs to improve the environmental performance of the process. While removing the components in the target products is generally higher than that of the prototype.

The method of opening loparite concentrate, including its means of hydrochloric acid leaching at 75-99oWith the separation of the solid residue containing loparite and aegirine from the solution and re-leaching, characterized in that the leaching is carried out in the reactor, soobshayem with the atmosphere through a reflux, and when the leaching is used 22-34% solution of hydrochloric acid.

 

Same patents:

The invention relates to the recovery of metal from metal-containing material

The invention relates to ferrous metallurgy and can be used to obtain high-purity powders of tantalum and niobium with a large specific surface for the production of capacitors

The invention relates to the metallurgy of rare metals, in particular to a device and method chlorine decomposition of tantalum - and niobium contained primary and technogenic raw materials

The invention relates to a process for recovering valuable metals from metal-containing materials, such as ore, ore sludge and slag
The invention relates to hydrometallurgical processing ore concentrates, and more particularly to the processing of loparite concentrate

The invention relates to the hydrometallurgical processing of ore concentrates, and more particularly to the processing of loparite concentrate

The invention relates to powder metallurgy and can be used to obtain high-purity powders of tantalum and niobium with a large specific surface for the production of capacitors

The invention relates to the field of metallurgy of refractory rare metals, namely metallurgy of niobium, and can be used in the production of niobium of high purity and its products for microwave engineering and microelectronics
The invention relates to ferrous metallurgy, in particular to methods of producing sponge titanium recovery of titanium tetrachloride with magnesium and how clean it vacuumforming separation
The invention relates to ferrous metallurgy, in particular to methods of producing titanium magnesium recovery of titanium tetrachloride

The invention relates to the processing of red mud
The invention relates to the field of metallurgy and chemical technology of inorganic substances and can be used in the metallurgical and chemical-metallurgical profile, such as titanium-magnesium plants for the extraction of vanadium
The invention relates to a method for integrated processing of anthropogenic vanadium raw materials, including chlorination in molten chlorides of the metals with the formation of the vapor-gas mixture and the spent molten salt chlorinators, condensation of chlorides of vanadium, titanium and silicon, distillation and chemical separation and purification, recycling of titanium tetrachloride and silicon, hydrolysis of oxytrichloride vanadium emitting precipitation of metavanadate ammonium and/or vanadium pentoxide, niobium, Department of precipitation from the mother solution, washing, drying and/or calcining to produce commodity of vanadium compounds

The invention relates to ferrous metallurgy, in particular to a method and a device for producing sponge titanium magnesium recovery of titanium tetrachloride, followed by vacuum separation of titanium sponge, namely the cooling device vacuum separation

The invention relates to ferrous metallurgy, in particular to the production of sponge titanium magnesium manner, and can be used in the process of reduction of titanium tetrachloride with magnesium

The invention relates to ferrous metallurgy and can be used to obtain vanadium pentoxide, niobium from oxytrichloride of vanadium by-product of the production of titanium sponge
The invention relates to the hydrometallurgical processing of ore concentrates, namely the processing of loparite and other titanium containing concentrates

The invention relates to metallurgy production of refractory materials-carbides

The invention relates to the field of hydrometallurgy of precious metals and can be used in the technology of extracting gold and silver from the mining of ore, ore concentrates and semi-finished products, tailings processing plants, as well as alternative technological process of cyanidation
Up!