KR20110055332A - A refining process for sun dried salt and its device - Google Patents

Abstract

PURPOSE: A refining method of bay salt and a refinement apparatus for the bay salt are provided to remove harmful components from the bay salt by radiating far infrared rays during a refining process. CONSTITUTION: A refining method of bay salt comprises the following steps: mixing salt water with the bay salt, and washing to filter foreign materials and impurities; crushing the washed bay salt, and removing the salt water; dehydrating the bay salt, and drying with 80~100deg C air; radiating far infrared rays to the bay salt; cooling the bay salt with cool air at 15~20deg C, and dehydrating at 40deg C; and packing the dehydrated bay salt.

Description

Refining process for sun dried salt and Its device

The present invention relates to a natural salt purification method and a device thereof, and more particularly, to a natural salt purification method and a purification device for purifying the natural salt with more efficient and excellent quality.

Solar salt is produced by collecting salt crystals formed by confining seawater and evaporating with sunlight and wind. The natural salt produced in this way is rich in natural minerals such as calcium and phosphorus, and has low salinity, which is excellent in taste and quality.

However, the natural salt contains magnesium chloride, arsenic, and the like, as well as various impurities, which are included in the salt due to the production in a natural state, and thus, purification work is required to remove them.

Conventional purification methods are processed separately using chemicals, or are purified through various methods as follows.

Natural salt by heating and melting natural salt by loading heat-resistant container containing sun salt in a furnace with a large number of heat source supply ports capable of supplying heat sources and a plurality of gas outlet ports capable of discharging internal gases, closing the furnace, and then supplying a heat source. Patent No. 10-1996-0010783 discloses a method for producing a refined salt in which impurities such as pesticides, heavy metals, oils and the like contained in the gas are removed by gasification.

A plurality of decontamination tanks are installed step by step, and each decontamination tank is provided with an open and close faucet for controlling the discharge of seawater, the heat is formed by communicating the lower portion from the lower decontamination tank to the upper decontamination tank and decontamination Part or all of the tank is disclosed in Korean Patent Laid-Open Publication No. 10-2000-0036295, in which a plurality of heat transfer control protrusions are attached to the bottom thereof.

By solidifying the liquefied salt by oxygen cooling to the temperature that can evaporate all heavy metals and insolubles contained in the crude salt, it is possible to purify the salts containing oxygen containing no insolubles and heavy metals harmful to human body at all. A method for purifying salts is disclosed in Korean Patent Laid-Open Publication No. 10-2002-0060433.

By refining the natural salt using mineral powders such as sericite, chromite, and illite, it is possible to decompose and adsorb and remove the harmful substances contained in the natural salt component by the strong adsorption power, anion substitution ability and large anion release effect of minerals. A method for purifying sun salt is disclosed in Korean Patent Publication No. 10-2005-0099474.

The present invention is to enable more efficient and productive purification of sun salt, to effectively remove various impurities and foreign substances mixed in the sun salt in the washing process and to radiate far infrared rays in the drying process after washing. To provide a high quality natural salt containing rich minerals and nutrients.

The present invention comprises the steps of washing to filter out impurities and foreign substances by mixing the salt of the salt of 24 bome salinity three times with natural salt; Crushing and dehydrating the washed natural salt; Drying the dehydrated natural salt to a drying rate of 99.5% by warm air at 80 to 100 ° C .; Radiating far-infrared rays to the sun salt in the drying; Cooling the dried natural salt with cold air at 15 to 20 ° C. and dehumidifying at 40 ° C. to remove humidity generated during the cooling process; The sun salt purification method of the step of classifying and packaging the dried and dehumidified sun salt by particle size,

A mixing tank for mixing the natural salt with three times the salinity of 24 bome brine to filter out impurities and foreign substances; A crushing device for crushing the washed natural salt; A dehydration apparatus for dehydrating the crushed sun salt; A drying apparatus for drying the dehydrated sun salt to a drying rate of 99.5% with a warm air of 80 to 100 ° C .; The natural salt dried by the warm air in the drying device is made of a natural salt refining device composed of a cooling device for cooling with a cold air of 15 ~ 20 ℃ and dehumidification at 40 ℃ to remove the humidity generated during the cooling process.

The present invention can purify the natural salt through a more efficient and productive process can contribute to cost reduction and productivity improvement of the natural salt production, toxic gas contained in the impurities by emitting far infrared rays during the purification process (NH3, SO3, CO , H3S, CL2) removes harmful substances such as human body, softens the salt taste, and more efficiently purifies and provides high quality natural salt.

The present invention is crushed by washing the salt prepared in the salt salt in the mixing tank,

After the crushing operation, dehydration and drying in the far-infrared dryer, radiating far-infrared rays to the sun salt during the drying process

After drying, the sun salt is purified and prepared by the process of classifying the particles.

Looking at the present invention in detail as follows.

1 is a process chart of the natural salt refining method according to the present invention, Figure 2 is a configuration diagram of the sun salt refining apparatus according to the present invention, Figure 3 is a cross-sectional view showing the configuration of a drying tank in the present invention.

Example

The natural salt produced in the salt field is stored in silos (SILO) 1 as it is stored and stirred in the mixing tank (2).

In the mixing tank (2), the salt is mixed with salt of 24 bome salt to wash the filter to filter out impurities and foreign matter. The brine is washed by mixing the salt of the sea salt using triple salt (volume ratio) of salt in the state that the salt of the sea salt is not dissolved, using salt of 24 bome salt of higher salinity than the salt of sea salt.

The mixed natural salt is transferred to a crushing device (3) for crushing, and the brine having washed the natural salt in the washing process precipitates foreign substances in the rapid precipitation device (4).

That is, natural salt is washed with brine of the above-described salinity of 24 bome, and during the washing process, there is a slippery thing that sinks under water when the salt is dissolved in water (magnesium, potassium, etc.). It is used to harden the tofu, which has the property of hardening the protein, but when this is ingested in our body, the protein is coagulated to cause arteriosclerosis.) And the brine used for washing is transferred to the rapid settling device (4). The sediment, etc. are precipitated and treated, and the clean brine of the supernatant is put into a number of washing processes and reused.

On the other hand, the recovered natural salt is washed again by adding the brine 24 bome brine, remove impurities and foreign matter, and then dehydrated in the dehydrator 5 and dried.

The dehydrated sun salt is dried in a drying apparatus (6).

In the drying apparatus 6, the sun salt is dried to a drying rate of 99.5% by warm air at 80 to 100 ° C.

In the drying process, as shown in the example shown in Figure 3 by the far-infrared radiation in the drying chamber 61 to dry.

The drying apparatus 6 is installed by installing a plurality of hot air pipes 62 for supplying warm air to the bottom of the drying chamber 61 at a predetermined interval, and forms an inlet 63 through which the natural salt flows into one side of the drying chamber 61 and the inlet opening ( 63) On the opposite side, an outlet 64 is formed.

The inlet (63) and the outlet (64) by installing a rotary valve 66 so that the natural salt flows in and out by a predetermined amount through the rotary valve 66 of the inlet (63) and outlet (64), the inlet ( The natural salt flowing through the 63) is scattered in the drying chamber 61 by the Hesse apparatus 67 so that the even drying operation is made.

The hot air pipe (62) forms an outlet in all directions so that the warm air can be exhausted in all directions to perform a drying operation, and the hot air supply pipe (65) is configured to communicate with the hot air supply pipe (65) below the drying chamber (61). The warm air supplied through the drying chamber 61 allows the salt to be blown to the warm air and dried.

Further, in the drying chamber 61, a far infrared radiator 68, such as an impeller structure made of a bioceramic material emitting far infrared rays, is installed to emit far infrared rays to the natural salt during the drying process to contain more abundant mineral components.

The outlet 64 is formed to be lower than the inlet (63), the natural salt dried by the warm air supplied from the hot air pipe 62 is loaded in the drying chamber 61 and overflowed to the outlet (64), the rotary valve ( 66) to be gradually discharged by a predetermined amount.

In addition, in the drying chamber 61, the far infrared radiation material is coated on the entire inner wall of the drying chamber 61 and the hot air pipe 62 so that the far infrared rays can be radiated together with the far-infrared radiator 68. Therefore, it is possible to contribute to providing richer minerals and improving quality by far infrared rays.

The hot air pipe 62 may itself be composed of a far-infrared radiation material, and composed of a material such as bioceramic in which far-infrared radiation is radiated, and together with the far-infrared radiator 68, radiate far-infrared rays to the natural salt of the drying process to mineral composition Enrich

The natural salt dried by the warm air in the drying apparatus 6 is cooled by the cooling apparatus 7 for sorting and packaging.

The natural salt dried by the warm air is dehumidified at 40 ° C. for cooling with 15 to 20 ° C. cold air and for removing humidity generated during the cooling process.

Natural salts, which have been washed, dried, and cooled as described above, are classified by particles according to particle size, transferred to storage silos (SILO), and packed into particles by coarse salt and fine salt through an automatic packaging facility.

1 is a process chart of the natural salt purification method according to the present invention

2 is a block diagram of a sun salt purification device according to the present invention

Figure 3 is a cross-sectional view showing the configuration of the drying tank in the present invention

<Description of the major signs used in the main parts of the drawing>

1: silo (SILO)

2: mixing tank

3: crusher

4: rapid sedimentation device

5: dewatering device

6: Drying device

7: chiller

Claims (3)

Mixing the natural salt with a salt of 24 bome brine in multiples of three times to filter out impurities and foreign matters; Crushing the washed natural salt, and brine used for washing is recovered by precipitating and removing foreign substances and re-injecting them into the washing process; Dehydrating the recovered natural salt; Drying the natural salt to a drying rate of 99.5% by warm air at 80 to 100 ° C .; Radiating far-infrared rays to sun salt in the drying process; Cooling the dried natural salt with cold air at 15 to 20 ° C. and dehumidifying at 40 ° C. to remove humidity generated during the cooling process; Natural salt purification method comprising the step of classifying the dried, dehumidified sun salt by particle size. A mixing tank (2) for mixing the natural salt with three times the salinity of 24 bome saline to filter out impurities and foreign substances; A crushing device (3) for crushing the washed natural salt; A rapid settling device (4) for precipitating foreign matters of the brine used in the natural salt washing process to recover the brine and reintroduce the washing process; A dehydration device (5) for dehydrating the recovered natural salt; A drying apparatus 6 for drying the dehydrated sun salt to a drying rate of 99.5% by a warm air of 80 to 100 ° C .; Natural salt tablet, characterized in that it comprises a cooling device (7) for dehumidifying at 40 ℃ to remove the humidity generated during the cooling process 15 to 20 ℃ cold salt dried by hot air in the drying device (6) Device. The drying apparatus 6 according to claim 2, Drying operation is performed by the warm air in the process of the inflow and discharge of Cheonilim and the drying chamber 61 is coated with the far-infrared radiation material on the entire inner wall; A plurality of hot air tubes 62 installed at a predetermined interval on the bottom of the drying chamber 61 to supply warm air into the drying chamber 61 and made of far-infrared radiation material; An inlet (63) formed at one side of the drying chamber (61) and into which the natural salt is introduced; A discharge port 64 for discharging the dried sun salt formed on the opposite side of the inlet port 63; A far-infrared radiator 68 installed inside the drying chamber 61 to radiate far-infrared rays to the sun salt during the drying process; Natural salt refining device, characterized in that the drying chamber 61 is formed in communication with the hot air pipe (62), the hot air supply pipe (65) for supplying warm air to the hot air pipe (62).

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