CS239166B1 - Grained moist substrates soring method especially of dolomite - Google Patents
Grained moist substrates soring method especially of dolomite Download PDFInfo
- Publication number
- CS239166B1 CS239166B1 CS836475A CS647583A CS239166B1 CS 239166 B1 CS239166 B1 CS 239166B1 CS 836475 A CS836475 A CS 836475A CS 647583 A CS647583 A CS 647583A CS 239166 B1 CS239166 B1 CS 239166B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- grain size
- dolomite
- grained
- weight
- soring
- Prior art date
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 13
- 239000010459 dolomite Substances 0.000 title claims description 12
- 229910000514 dolomite Inorganic materials 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 14
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 14
- 239000004571 lime Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 abstract description 4
- 240000006909 Tilia x europaea Species 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- RVRDJZJWOSUNPY-UHFFFAOYSA-H [Mg+2].[Ca+2].C([O-])([O-])=O.[Mg+2].C([O-])([O-])=O.C([O-])([O-])=O Chemical compound [Mg+2].[Ca+2].C([O-])([O-])=O.[Mg+2].C([O-])([O-])=O.C([O-])([O-])=O RVRDJZJWOSUNPY-UHFFFAOYSA-H 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- SJYSHNAOFNABBH-UHFFFAOYSA-N calcium;magnesium;hydrate Chemical compound O.[Mg].[Ca] SJYSHNAOFNABBH-UHFFFAOYSA-N 0.000 description 1
- YLUIKWVQCKSMCF-UHFFFAOYSA-N calcium;magnesium;oxygen(2-) Chemical compound [O-2].[O-2].[Mg+2].[Ca+2] YLUIKWVQCKSMCF-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Vynález rieši problém triedenia vlhkých jemnozrnných rudných a iných surovin, s hmotnostným podielom do 30 % častíc o zrnitosti pod 0,5 mm a s 1 až 10 % volné] vody. Podstata vynálezu spočívá v tom, že zrnitý substrát sa zmieša s mletým vápnům o zrnitosti do 0,2 mm v pomere na 1 diel vol'- nej vody až 1,5 dielov mletého vápna, potom sa zmes nechá odležet po dobu 4 až 20 hodin a získaný suchý substrát sa roztriedi podlá zrnitosti.The invention solves the problem of wet sorting fine-grained ore and other raw materials, p by weight up to 30% by weight grain size below 0.5 mm and with 1 to 10% free] water. The essence of the invention is that it is grainy the substrate is mixed with the ground lime grain size up to 0.2 mm in proportion to 1 vol. water up to 1.5 parts of ground lime, then the mixture is left to stand for 4 to 20 hours and the obtained dry substrate is sorted grainy.
Description
Vynález rieši problém triedenia vlhkých jemnozrnných rudných a iných surovin, s hmotnostným podielom do 30 % častíc o zrnitosti pod 0,5 mm a s 1 až 10 % volné] vody.The invention solves the problem of sorting wet fine-grained ore and other raw materials, with a proportion by weight up to 30% of particles having a grain size below 0.5 mm and with 1-10% free water.
Podstata vynálezu spočívá v tom, že zrnitý substrát sa zmieša s mletým vápnům o zrnitosti do 0,2 mm v pomere na 1 diel vol'nej vody až 1,5 dielov mletého vápna, potom sa zmes nechá odležet po dobu 4 až 20 hodin a získaný suchý substrát sa roztriedi podlá zrnitosti.SUMMARY OF THE INVENTION The granular substrate is mixed with ground limes with a grain size of up to 0.2 mm in proportion to 1 part of free water up to 1.5 parts of ground lime, after which the mixture is left to stand for 4 to 20 hours and the dry substrate obtained is sorted by grain size.
23916B23916B
Vynález sa týká sposobu triedenia taženého, resp. drteného kameniva — dolomitu, vápenca a iných homogénnych surovin rudných i nerudných. Jemné triedenie materiálov dolomitov s určitým stupňom vlhkosti Je velmi ťažké, pretože docielované výsledky vždy závisia na vlhkosti aďhéznych sil triedených častíc, ktoré sú různé, dané druhom materiálu, tak 1 stupňom vlhkosti.The present invention relates to a method of sorting a drawn or trailed container. crushed aggregates - dolomite, limestone and other homogeneous raw materials ore and non-ore. Fine sorting of dolomite materials with a certain degree of moisture It is very difficult, because the results obtained always depend on the moisture and adhesion forces of the sorted particles, which are different depending on the type of material and 1 degree of moisture.
Vlhké jemuozrnné, homogénne částice rudných i nerudných surovin možu byť triedené mokrým spůsobom, alebo suchým sposobom. Výhodou triedenia mokrým sposobom je sice dobré triedenie až do určitého stupňa zrnitosti, nevýhodou je obtiažne a nákladné odstraňovanie inajjemnejších podielov — nevyužitého kalu vyžadujúceho odkalište, alebo zložitého odvodňovacieho zariadenia. Pričom u mokrého sposobu vzniklý kal je ťažko spracovatelný, vyžadujúci odkalište, záměr půdy a devastujúci prírodné prostredie. K nevýhodám suchého sposobu prevádzaného sušením náleží vysoká spotřeba tepelnej energie a tým neefektivnost spracovania.Wet, fine-grained, homogeneous particles of ore and non-ore raw materials can be sorted in a wet way or in a dry way. The advantage of wet sorting is good sorting up to a certain degree of granularity, the disadvantage is the difficult and costly removal of the most delicate fractions - unused sludge requiring a sludge bed or complicated drainage equipment. However, the sludge produced by the wet process is difficult to process, requiring a sludge bed, soil design and devastating natural environment. The disadvantages of the dry process carried out by drying are the high consumption of thermal energy and thus the inefficiency of the processing.
Uvedené nevýhody odstraňuje sposob triedenia zrnitých vlhkých substrátov hlavně dolomitu s hmotnostným podielom až 30 % častíc o zrnitosti pod 0,5 mm a s 1 až 10 % volnej vody, podlá vynálezu. Podstata vynálezu spočívá v tom, že zrnitý substrát sa zmieša s mletým vápnom o zrnitosti do 0,2 mm v pomere na 1 diel volnej vody až 1,5 dielov mletého vápna., potom sa zmes nechá odležať po dobu 4 až 20 'hodin a získaný suchý substrát sa roztriedi podlá zrnitosti.These disadvantages are overcome by the method of screening granular wet substrates mainly of dolomite having a weight fraction of up to 30% by weight of particles with a grain size below 0.5 mm and with 1-10% of free water according to the invention. SUMMARY OF THE INVENTION The granular substrate is mixed with ground lime with a grain size of up to 0.2 mm in proportion to 1 part of free water to 1.5 parts of ground lime, after which the mixture is left to stand for 4 to 20 hours and the dry substrate obtained is sorted by grain size.
Pri použití tohoto sposobu podlá vynálezu u vlhkých substrátov — dolomitov s následným triedením sa docieluje chemická exotermická reakcia kysličníka vápenatého (horečnatéhoj, pri ktorej sa viaže časť vody na hydrát vápenatý (horečnatý) pri intenzívnom zvýšení teploty na 80 až 90 °C a za súčasného odvádzania páry. Jemné zrnité a vlhké substráty, ktoré sú v prirodzemom stave prakticky netrieditelné, sú velmi dobré trieditelné či pneumaticky, alebo mechanickým triedením pri použití súčasnej triediacej techniky.Using this method according to the invention, for wet substrates of dolomites followed by screening, a chemical exothermic reaction of calcium oxide (magnesium) is achieved, which binds part of the water to calcium hydrate (magnesium) while increasing the temperature to 80-90 ° C with simultaneous removal. Fine granular and moist substrates, which are practically unsorted in their natural state, are very good graded by pneumatic or mechanical sorting using the current sorting technique.
Pri tomto postupe triedenia vlhkých zrnitých substrátov dolomitu sa docieluje vyšších ekonomických účinkov a lepších ekologických následkov oproti mletému sposobu triedenia, pretože jemné podiely sú naprosto suché, ďalej lahko transportovatelné a spracovatelné na výhodné, efektívne výrobky.This process of sorting wet granular substrates of dolomite achieves higher economic effects and better ecological consequences compared to the ground sorting method, since the fines are completely dry, easy to transport and process into advantageous, efficient products.
Vynález prináša vyšší ekonomický účinok v tom, že jemné zrnité podiely spolu s vápnom sú efektívne zhodnotené ako vápenatohorečnatá zmes uhličitanov pre polnohospodárske účely a tým sa efektívne využívá vápno, ktoré sa používá tiež pre priainu aplikáciu v polnohospodárstve.The invention has a higher economic effect in that the fine grains together with lime are effectively evaluated as a calcium magnesium magnesium carbonate mixture for agricultural purposes, and thus the lime, which is also used for direct agricultural application, is effectively used.
Týmto sposobom sa efektívne využívá potřebná na výpal vápna tepelná energia a dalšie vlastnosti vápna, a to je hydroskopičnosť, ktoré sa pri priamej aplikácii vápna v polnohospodárstve strácajú.In this way, the heat energy and other properties of lime are effectively utilized for lime firing, and this is the hygroscopicity that is lost in direct application of lime in agriculture.
Jemný suchý substrát zmesi hydrátu vápna a jemných podielov dolomitu sa dá použit alko zmes pre speciálně účely, a to ako dolomit velmi jemne mletý pod 0,0® mm s vysokými nárokmi na chemickú čistotu. Ide o použitie ako plnidla do farieb, lakov, plastických hmot, pryže PVC ai., tmělo v, čistiacich prostriedkov, gumárenských zmesi.A fine dry substrate of a mixture of lime hydrate and fines of dolomite can be used as an alcohol blend for special purposes, as dolomite very finely ground below 0.0 mm with high chemical purity requirements. It is used as fillers for paints, varnishes, plastics, rubber PVC and others, darkening agents, cleaning agents, rubber mixtures.
Odtriedením jemných podielov a prachových častíc od zrnenia 0,3 až 4 mm, alebo· 0,3 až 6 mm sa dosiahne optimálně zrnenie týchto frakcií pre použitie v hutníctve železa na homogenizáciu a aglomeráciu rúd. Účinok tohto vytriedeného dolomitu, zbaveného prachových podielov je mimoriadne efektívny z technologického híadiska přípravy aglomerátu pre vysoké pece a pre samostatný technologický proces vo vysokých peciach včetne zníženia energetických nárokov pri výrobě surového železa.By separating the fines and dust particles from a grain size of 0.3 to 4 mm, or 0.3 to 6 mm, an optimum grain size of these fractions is obtained for use in iron metallurgy for homogenizing and agglomerating ores. The effect of this screened dolomite, dust-free, is particularly effective in the technological aspects of blast furnace agglomerate preparation and for the separate blast furnace process, including the reduction of energy requirements in pig iron production.
Dalším účinkom je zníženie prašnosti pri vykládka, dopravě a manipulácii na homogenizačných skládkách a aglopásoch. Zníženie obsahu volnej vody a jemných podielov znamená zníženie zamfzavosti dolomitov v zimě a tým vysokú úsporu tepelnej energie.Another effect is to reduce dustiness during unloading, transport and handling in homogenization dumps and aglopasses. Reducing the free water content and fine fractions means reducing the frostiness of the dolomites in winter and thus greatly saving thermal energy.
PříkladExample
Zrnitý substrát dolomitu o zrnitosti do 10 mm, s obsahom 3® % hmotnostných jemných častíc do 0,3 mm, s obsahom volnej vody 10 % hmotnostných podielov, sa zmieša v pomere na 1 hmotnostný diel volnej vody 1,5 dielov práškovitého jemne mletého vápna o zrnitosti do 0,2 mm v miešacom zariadení a potom sa dopraví na odležávaciu skládku. Zmes sa nechá odležať 15 hodin.A granular substrate of dolomite having a grain size of up to 10 mm, containing 3% by weight fine particles up to 0.3 mm, with a free water content of 10% by weight, is mixed in proportion to 1 part by weight of free water 1.5 parts of finely ground lime. with a grain size of up to 0,2 mm in a mixer and then transported to a landfill. The mixture is left to stand for 15 hours.
V priebehu tejto doby kysličník vápenatý reaguje s volnou vodou na hydrát vápenatý podlá známej reakcie za súčasného vývinu tepla, ktorým sa zmes zohreje na 90 °C. Zmes sa po troch hodinách premiešava za účelom uvolnenia vodnej páry, ktorá vzniká pri chemickej reakcii. Po úplnom zreagovaní volnej vody a jej odpaření vznikne naprosto suchý substrát, ktorý ďalej už je spracovatelný — trieditelný súčasnými technickými prostriedkami.During this time, the calcium oxide reacts with the free water to form calcium hydrate according to a known reaction, while generating heat to heat the mixture to 90 ° C. The mixture is stirred after three hours to release the water vapor produced by the chemical reaction. After the complete reaction of the free water and its evaporation, a completely dry substrate is formed, which is further workable - sorted by current technical means.
Využitie tohoto spůsobu ipodla vynálezu je výhodné na vŠetkých ložiskách dolomitov, ktoré zásobujú hutě, kde množstvo' spotřebovaných dolomitov· je niekolko stotisíc ton a pre polnohospodársike účely na neutralizáciu kyslých pod a zvýšenia horčíka v pode.The use of this method according to the invention is advantageous in all dolomite deposits that supply metallurgical plants, where the amount of dolomite consumed is several hundred thousand tons and for agricultural purposes to neutralize acidic and increase magnesium in the base.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CS836475A CS239166B1 (en) | 1983-09-06 | 1983-09-06 | Grained moist substrates soring method especially of dolomite |
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CS836475A CS239166B1 (en) | 1983-09-06 | 1983-09-06 | Grained moist substrates soring method especially of dolomite |
Publications (2)
Publication Number | Publication Date |
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CS647583A1 CS647583A1 (en) | 1985-05-15 |
CS239166B1 true CS239166B1 (en) | 1985-12-16 |
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CS836475A CS239166B1 (en) | 1983-09-06 | 1983-09-06 | Grained moist substrates soring method especially of dolomite |
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1983
- 1983-09-06 CS CS836475A patent/CS239166B1/en unknown
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