PROCESS

The present invention relates to the addition of dry cyclone powders formed during production to the sludge service tank used in the ceramic production method.

PRIOR ART

Ceramic is an inorganic and non-metallic solid material formed by metallic materials that are chemically ionic and/or covalently bonded to each other with non-metallic elements. Ceramic is obtained by grinding raw materials and their mixtures in certain particle sizes, drying after shaping, subjecting to a heat treatment determined as glazed and unglazed, with the effect of heat and then cooling, giving them technical properties suitable for use.

The sludge, which is pressed from the service tank to the spray dryer with the help of pistons during the drying stage before shaping, turns into granules with the help of the heat given in the spray dryer and the spraying process is initiated. It is very important to be able to control the heat given in the process, because in this method step, which works at high temperatures, the transfer of materials containing granules takes place. In the meantime, very fine powder is formed in the granular mass that has formed. These fine powders are drawn to the cyclone group (absorbed) with the help of the main fan. A feedback is provided by transferring the powders absorbed by the dry cyclone group during production to the granule part in the prior art. However, this situation reduces the grain size of the granule mass and causes problems during shaping.

In case said dry cyclone powders are not added to the granule mass, they have to be removed from the system for reuse or disposal, which causes energy and cost losses. It is of great importance to reuse cyclone powders that contain heavy metals that can harm the environment even if they are disposed.

The following documents are found during the preliminary patent research made.

The Korean document with application number KR102199459B1 describes the method of repairing the weaknesses or defects in concrete products and increasing the strength of ceramic mortar. Said method can be used to solve the problems of shaping due to the low grain size.

In the Chinese document with application number CN107840645A, it is mentioned that porcelain slices are used in the production of the same model porcelain, reducing material loss and enabling improvements in strength.

In the Chinese document with application number CN107500734A, it is explained that some minerals, which are produced as hazardous wastes in the production of water- permeable ceramic bricks, are used again in the same process, thus strength gain and positive effects on the environment are obtained due to the change in density during use. It does not seem possible to use the method in the production of the ceramics in the study that is desired to be protected due to the structure of the ceramics mentioned in the study and the unmentioned equipment used in production.

In the Chinese document with application number CN107235674A, the contribution of ceramic waste in the construction of materials made from cement is explained.

In Chinese document with the application number CN106396627A, it is explained that the money and energy spent in the realization of processes such as the reuse of wastes generated in ceramic production and thus the disposal of wastes are saved, but in the application of this process, problems may occur due to particle size during shaping, and the energy provided in the drying stage in the production method cannot be saved.

The Spanish document with application number ES2126478A1 describes the use of pyrite ash in the production of materials by grinding and crushing and increasing the quality of the final product.

The Chinese document with the application number CN1149012A, mentions that the wastes can be used in the shaping processes of ceramics through re-evaluation. It is the prior art of the currently used method.

In the study with application number EP402746A1, a method on supplementing clays used in ceramic production with wastes containing certain heavy metal is disclosed.

In the European Patent document with application number EP208156A1 , it is explained that the harmful wastes are processed for reuse and that it performs this by contributing to the density adjustment of the processes in which the waste powder is added. If the method is used, problems may still occur due to the grain sizes in the final products.

As a result, all abovementioned problems have made it necessary to make an improvement in the relevant technical field.

AIM OF THE INVENTION

The present invention aims to eliminate the abovementioned problems and to make a development in the relevant technical field.

The main aim of the invention is to reveal the method steps that enable the granular mass to be reused with less heat in the method step in which the spray dryer is used.

Another aim of the invention is to reveal the method steps that prevent the damage to the environment by the reuse of cyclone powders that can harm the environment in production.

Another aim of the invention is to reveal the method steps that enable improvements in the structure of the product formed in the shaping step.

BRIEF DESCRIPTION OF THE INVENTION

The present invention is a drying line to be used in the drying process in ceramic production and the method in which said drying line is used so as to fulfill all aims mentioned above and will be obtained from the following detailed description. Accordingly, it comprises dry cyclone powder conveyor belt which is connected to the cyclone group chamber in such a way that cyclone powders are discharged to ensure the transfer of dry cyclone powders from the cyclone group chamber to the service tank, is engaged with the sludge service tank so that dry cyclone powders mix with the production sludge

The present invention is a drying process for use in the production of ceramics, comprising of the following steps;

• conveying the production sludge from the service tank to the spray dryer from the pump pipe with the help of a piston pump, • coming of the granule mass formed in the spray dryer, which is given a temperature between 400-600°C by the heater, into the granule mass chamber,

• reaching of the fine powder formed in the spray dryer to the cyclone group chamber by moving along the cyclone powder transfer pipe with the help of the main fan from the spray dryer and passing through the cyclone group connection element characterized in that; it comprises the following method steps;

• returning the dry cyclone powders drawn into the cyclone group chamber to the service tank with the help of the dry cyclone powder conveyor belt,

• increasing the mixer speed because the dry cyclone powders returning to the service tank increase the density of the production sludge,

• keeping the temperature required for the granulation process of the production sludge containing the dry cyclone powders with increased density, which is transferred from the service tank to the spray dryer from the pump pipe with the help of a piston pump, between 340-560°C by reducing the same between “40+- 20”.

The present invention is a drying line for use in the production of ceramics, comprising of the following;

• service tank for mixing ground production sludge,

• spray dryer that transforms the sludge mixed in the service tank into granular structure

• piston pump that allows the mixed production sludge to pass from the service tank along the pump pipe to the spray dryer,

• cyclone group chamber to ensure the treatment of dry cyclone powders formed in the spray dryer,

• main fan that provides the dry cyclone powders from the spray dryer to reach the cyclone group chamber by passing the same along the cyclone powder transfer pipe, characterized in that, it comprises the following; • dry cyclone powder conveyor belt which is connected to the cyclone group chamber in such a way that cyclone powders are discharged to ensure the transfer of dry cyclone powders from the cyclone group chamber to the service tank, is engaged with the sludge service tank so that dry cyclone powders mix with the production sludge.

BRIEF DESCRIPTION OF DRAWINGS

In Figure 1 , a schematic view of the inventive drying process.

The figures are not required to be scaled and the details which are not necessary for understanding the present invention may be neglected. Moreover, the elements that are at least substantially identical or have at least substantially identical functions are shown by the same number.

DESCRIPTION OF THE REFERENCES IN FIGURES

10. Service tank

11. Mixer

12. Piston pump

13. Pump pipe

20. Spray dryer

21. Heater

22. Granular mass collection chamber

23. Cyclone powder transfer pipe

30. Cyclone group chamber

31. Cyclone group connection element

32. Main fan

33. Dry cyclone powder conveyor belt DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the inventive subject “reuse of spray dryer dry cyclone powders in the production process” is described by means of examples only for clarifying the subject matter such that no limiting effect is created.

The present invention relates to the addition of dry cyclone powders formed during production to the sludge service tank used in the ceramic production method.

In addition to the following prior art process steps;

• conveying the production sludge from the service tank (10) to the spray dryer (20) from the pump pipe (13) with the help of a piston pump (12),

• coming of the granule mass, which is formed in the spray dryer (20), which is heated between the heater (21) and 400-650°C, and contains fine powders, into the granule mass chamber (22),

• reaching of the fine powder formed in the spray dryer (20) to the cyclone group chamber by moving along the cyclone powder transfer pipe (23) with the help of the main fan (32) and passing through the cyclone group connection element (31), the present invention comprises the following process step as a novelty;

• returning the dry cyclone powders drawn into the cyclone group chamber (30) to the service tank (10) with the help of the dry cyclone powder conveyor belt (33).

The dry cyclone powder conveyor belt (33) used for the process of returning dry cyclone powders from the cyclone group chamber (30) to the sludge service tank (10) is added specifically to the method. In case of transport of cyclone powders, dry cyclone powder conveyor belt (33), made of material resistant to abrasion and clogging is connected to the cyclone group chamber (30) so that the cyclone powders are discharged, it is connected to the sludge service tank (10) in such a way that dry cyclone powders are mixed with the production sludge.

Dry cyclone powders coming to the service tank (10) increase the density of the production sludge in the service tank and the mixing power required for the sludge with increasing density to become a homogeneous sludge is provided by increasing the speed of the mixer (11). The production sludge, whose density has been increased with dry cyclone powders, comes to the spray dryer (20) from the pump pipe (13) with the help of the piston pump (12) after being mixed with the mixer (11) with increased speed. Since the incoming sludge is denser than when dry cyclone powders are not added, that is, the liquid part that reduces the density is less, the heat required to be given from the heater (21) can be reduced by 50-100°C so as to remove and dry the liquid part. This helps to reduce the amount of gas required for heat, thus reducing the amount of energy used and reducing the cost spent.

Since dry cyclone powders are reprocessed in the spray dryer (20) with the process of conveying the same from the cyclone group chamber (30) to the service tank (10), they are also subject to the granulation process and it provides to solve the problems arising from not having the same strength everywhere that occurs in the forming process due to the small-grained structure mentioned in the prior art.

Problems caused by the small-grained structure of dry cyclone powders entering the ceramic forming process can also be solved by the removal of dry cyclone powders, however, time and resources are required for processes such as disposal or reuse in another process. The reuse of dry cyclone powders with the process steps mentioned in the invention prevents their destruction by wasting resources and time, and even in case of destruction, it prevents possible damage to the environment due to heavy metals it may contain.

The protection scope of the invention is specified in the appended claims and cannot be limited to the description made for illustrative purposes in this detailed description. Likewise, it is clear that a person skilled in the art can present similar embodiments in the light of the above descriptions without departing from the main theme of the invention.