EP4622748A1 - Mechano-chemische aktivierung mineralischer materialien - Google Patents
Mechano-chemische aktivierung mineralischer materialienInfo
- Publication number
- EP4622748A1 EP4622748A1 EP24783262.9A EP24783262A EP4622748A1 EP 4622748 A1 EP4622748 A1 EP 4622748A1 EP 24783262 A EP24783262 A EP 24783262A EP 4622748 A1 EP4622748 A1 EP 4622748A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mill
- activation
- mechano
- chemical activation
- internal volume
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
Definitions
- the invention relates to the selection of the size of a mill for the economically viable mechano-chemical activation, in particular of clays, for example in the cement industry.
- Activated clays have established themselves as an additive, particularly in the cement industry.
- the current standard method is drying and calcining the clays, i.e., thermal activation. This requires energy for heating, and the high temperature can also cause further, potentially undesirable, changes in the material.
- the thermal process requires flue gas purification to capture the resulting nitrogen oxide and sulfur oxide emissions.
- the thermal process will require the use of processes to capture and, if necessary, purify the carbon dioxide produced or released.
- a mill which is suitable for mechanochemical activation i.e. which can provide a sufficiently high energy input, and which has an internal volume of at least 1 m3
- This difference in efficiency means that mills with an internal volume of less than 100 l are completely inefficient and only achieve economically viable efficiency with an internal volume of more than 1 m3 .
- pilot plant tests have shown that the ratio between the activation achieved and the energy input depends to a large extent on the size of the machine, so that a minimum size of the machine is determined for economical operation. This means that a comparatively large mill must be selected regardless of the throughput to be achieved.
- large mills are known to those skilled in the art, these are usually only suitable for pure comminution and cannot therefore be used for mechanochemical activation.
- the mill is a stirred ball mill.
- the mill has an energy density of at least 200 kW/m 3 .
- the mill has a length of at least 2 m, preferably of at least 2.5 m.
- the mill has a cross-sectional area perpendicular to the longitudinal axis of at least 0.71 m 2 , preferably of at least 0.75 m 2 . In a further embodiment of the invention, the mill has a length to diameter ratio of at least 3, preferably of at least 3.5.
- the mill used is a stirred ball mill.
- the mill used has an energy density of at least 200 kW/m 3 .
- the invention relates to a method for the mechanochemical activation of clays, for example, for use in the cement industry.
- a mill with an internal volume of at least 1 m3 is selected.
- a stirred ball mill is selected as the mill.
- the mill is operated with an energy density of at least 200 kW/m 3 .
- the mill is operated with a residence time of the material to be ground in the mill of at least 5 minutes, preferably at least 10 minutes, particularly preferably at least 20 minutes.
- phyllosilicates are activated.
- Phyllosilicates have proven particularly suitable, and the positive effect of a large mill is even more noticeable with them.
- Fig. 1 shows two exemplary mills that differ only in the size of their interior.
- the interior of B is 10 times larger than that of A.
- the abscissa represents the energy input in kWh/t, and the ordinate represents the degree of activation achieved, with 100% representing the maximum achievable activation.
- Fig. 2 the internal volume of the mill in liters (I) is plotted against the applied energy density in kW/L. It is clearly evident that the energy density depends significantly on the volume below a mill volume of 1000 I or 1 m3 ; the slope of the determined curve is strongly negative. Only at a volume of 1000 I and above does the curve become significantly flatter. From this point on, economic efficiency is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HRP20251481TT HRP20251481T1 (hr) | 2023-11-29 | 2024-10-02 | Mehano-kemijska aktivacija mineralnih materijala |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023133379.8A DE102023133379A1 (de) | 2023-11-29 | 2023-11-29 | Mechano-chemische Aktivierung mineralischer Materialien |
| LU505651A LU505651B1 (de) | 2023-11-29 | 2023-11-29 | Mechano-chemische Aktivierung mineralischer Materialien |
| PCT/EP2024/077663 WO2025113852A1 (de) | 2023-11-29 | 2024-10-02 | Mechano-chemische aktivierung mineralischer materialien |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4622748A1 true EP4622748A1 (de) | 2025-10-01 |
| EP4622748C0 EP4622748C0 (de) | 2025-11-05 |
| EP4622748B1 EP4622748B1 (de) | 2025-11-05 |
Family
ID=92967114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24783262.9A Active EP4622748B1 (de) | 2023-11-29 | 2024-10-02 | Mechano-chemische aktivierung mineralischer materialien |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4622748B1 (de) |
| ES (1) | ES3054941T3 (de) |
| HR (1) | HRP20251481T1 (de) |
| PL (1) | PL4622748T3 (de) |
| WO (1) | WO2025113852A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7931218B2 (en) * | 2005-08-15 | 2011-04-26 | Xstrata Technology Pty Ltd | Method for increasing efficiency of grinding of ores, minerals and concentrates |
| CN106345576B (zh) | 2016-11-16 | 2019-02-26 | 湖北工业大学 | 工业化处理混凝土掺合料的湿磨机 |
| DE102018122540B3 (de) | 2018-09-14 | 2019-11-21 | Vertical Power Mills Technology AG | Vertikale Kugelmühle, Statorsegment für eine vertikale Kugelmühle und Verfahren zum Warten einer vertikalen Kugelmühle |
| DE102023106217A1 (de) | 2023-03-13 | 2024-09-19 | Celitement GmbH & Co. KG | Mechanische Aktivierung von Tonen |
| DE102023106222A1 (de) | 2023-03-13 | 2024-09-19 | Celitement GmbH & Co. KG | Farboptimierung bei der mechanischen Aktivierung von Tonen |
| DE102023123525A1 (de) | 2023-03-13 | 2024-09-19 | Thyssenkrupp Ag | Zementzusatzstoff aus Altbeton |
| DE102023106221A1 (de) | 2023-03-13 | 2024-09-19 | Celitement GmbH & Co. KG | Kombinierte mechanische und thermische Aktivierung von Tonen |
| DE102023106210A1 (de) | 2023-03-13 | 2024-09-19 | Celitement GmbH & Co. KG | Mechanische Aktivierung von Tonen |
-
2024
- 2024-10-02 WO PCT/EP2024/077663 patent/WO2025113852A1/de active Pending
- 2024-10-02 ES ES24783262T patent/ES3054941T3/es active Active
- 2024-10-02 HR HRP20251481TT patent/HRP20251481T1/hr unknown
- 2024-10-02 PL PL24783262.9T patent/PL4622748T3/pl unknown
- 2024-10-02 EP EP24783262.9A patent/EP4622748B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| PL4622748T3 (pl) | 2026-01-19 |
| EP4622748C0 (de) | 2025-11-05 |
| WO2025113852A1 (de) | 2025-06-05 |
| ES3054941T3 (en) | 2026-02-09 |
| HRP20251481T1 (hr) | 2026-02-13 |
| EP4622748B1 (de) | 2025-11-05 |
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