CN105326010A - Preparation method of bamboo salt - Google Patents
Preparation method of bamboo salt Download PDFInfo
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- CN105326010A CN105326010A CN201510724651.XA CN201510724651A CN105326010A CN 105326010 A CN105326010 A CN 105326010A CN 201510724651 A CN201510724651 A CN 201510724651A CN 105326010 A CN105326010 A CN 105326010A
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Abstract
The invention provides a preparation method of bamboo salt. By weight, 1-4 parts of bamboo sheets and 6-9 parts of sea salt are mixed and placed in a calcinator. The bamboo salt is processed and prepared through three segments, wherein evacuation nitrogen introduction temperature raising is performed in the first segment, oxygen supply temperature raising is performed in the second segment, and nitrogen introduction temperature lowering is performed in the third segment. Salt pulp is cooled and crystallized under nitrogen protection at the early temperature lowering stage; the salt pulp is taken out after calcinated mixtures are cooled and crystallized, and smashed so that the bamboo salt can be obtained. According to the preparation method, in the good closed high-temperature sintering process of the bamboo salt, the situations that bamboo is carbonized in advance and compactness is reduced during bamboo salt preparation are avoided in a segmented nitrogen introduction oxygen supply temperature raising mode by controlling the oxygen ratio in a hearth in a segmented mode, and therefore protection of effective components and mineral substances is achieved in the bamboo salt preparation process, and uniformity of bamboo salt quality is achieved.
Description
Technical field
The present invention relates to bamboo salt production field, especially a kind of preparation method of bamboo salt.
Background technology
Traditional handicraft produces bamboo salt, first choose 3 years and the prime of life bamboo wood of above growth, sea salt is loaded after being divided into the thick bamboo tube of joint, then with loess sealing, put into calcining furnace, temperature calcination more than 810 DEG C is after about eight hours, removing bamboo charcoal ash takes out salt plug, and salt plug is broken, is then ground into powder with machine, filtered out the bamboo salt of uniform particle sizes by screening plant, packaging is dispatched from the factory.
Utilize in the process of thick bamboo tube filling sea salt calcining bamboo salt, because calcining furnace furnace cavity is larger, the thick bamboo tube multilayer arrangement of filling salt, there is again ventilation bar wind system, make thick bamboo tube in the temperature rise period too early dehydration carbonization at calcining initial stage, the compactness of thick bamboo tube is weakened, greatly reduce the utilization rate of bamboo itself, cause calcining hot stage salt body self further to run off with the volatilization of other mineral matters contained, cause the bamboo salt quality homogeneity of output poor, productive rate reduces.In addition, after calcining constant temperature terminates, ventilation system also works on, and easily causes acquired bamboo salt by secondary oxidation, again reduces the quality of bamboo salt.
Also some preparation method, need to use electrolysis unit, can adsorb to the useful mineral matter element of human body and heavy metal substance electrolysis simultaneously, reduce the content of salt mineral, and the content of sodium chloride in salt is increased, in a disguised form affecting bamboo salt quality, is the preparation method of the bamboo salt of 201510232126 as application number.
Summary of the invention
Technical problem to be solved by this invention is the preparation method providing a kind of bamboo salt, and gained bamboo salt quality homogeneity is high.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A preparation method for bamboo salt, concrete steps are:
(1) bamboo chip and sea salt mixing are placed in calcining furnace, wherein, bamboo chip 1-4 part, sea salt 6-9 part described in mark meter by weight;
(2) three phases carries out processing preparation, and wherein, the first stage is that emptying logical nitrogen heats up, and second stage is that oxygen supply heats up, and the phase III is logical nitrogen cooling, and salt is starched at cooling initial stage crystallisation by cooling under nitrogen protection;
(3) continue crystallisation by cooling: after the mixture crystallisation by cooling after calcining, take out, pulverize i.e. obtained bamboo salt.
Preferably, the preparation method of above-mentioned bamboo salt, mark meter bamboo chip 3 parts, sea salt 6-7 part by weight in described step (1).
Preferably, the preparation method of above-mentioned bamboo salt, in described step (1), the length of bamboo chip is 2-5cm, and wide is 1.5-3cm.
Preferably, the preparation method of above-mentioned bamboo salt, in described step (2), the first stage is that emptying logical nitrogen heats up, concrete steps are: open air intake valve, nitrogen is passed in stove, nitrogen flow is 800-1000ml/min, is about 5-10min during ventilation, and ventilation terminates rear drain tap of first closing and closes air intake valve again; In described step (2), second stage is that oxygen supply heats up, and concrete steps are: first open drain tap, then open air intake valve, pass into oxygen, oxygen flow is 500-600ml/min, is about 10-20min during ventilation, and ventilation terminates rear drain tap of first closing and closes gas valve again.
Preferably, the preparation method of above-mentioned bamboo salt, in described step (2), the first stage gets rid of furnace air, and pass into nitrogen, nitrogen flow is 800-1000ml/min, 5-10min is about during ventilation, then be warming up to 200-240 DEG C, heating rate is 8-12 DEG C/min, because bamboo chip intensification initial moisture is lost very fast, the form of bamboo chip itself can be kept after passing into nitrogen preferably, avoid the carbonization that the hot air in bamboo chip and burner hearth is too much and too early; When temperature rises to 810 DEG C or higher, enter second stage heating rate constant, this process passes into oxygen, oxygen flow is 500-600ml/min, be about 10-20min during ventilation, its object mainly makes bamboo chip dewater carbonization and with the reacting completely of salt body, fully, make several mineral materials and molten salt bath joint efficiency in bamboo improve, due to the good leak tightness of high-temperature calcination container, can further improve the conversion ratio of bamboo salt finished product; Phase III remains temperature-resistant in calcining furnace, after keeping 30-60min, again pass into nitrogen, nitrogen flow is 600-1000ml/min, 3-5min is about during ventilation, Temperature fall process, this process makes the bamboo salt of above-mentioned reaction gained avoid the air that is passed in the process at cooling initial stage to be again oxidized, can to obtain the bamboo salt of quality balance.
The invention has the beneficial effects as follows:
The preparation method of above-mentioned bamboo salt, the mode of being led to nitrogen oxygen supply intensification by the stage makes bamboo salt in well airtight high-temperature firing process, by aerobic ratio in control by stages burner hearth, the too early carbonization of bamboo in avoiding bamboo salt to prepare, compactness reduces, and then the protection of the active ingredient realized in bamboo salt preparation process and mineral matter, decrease in traditional bamboo salt preparation process adopts loess to seal the irregular colour brought simultaneously, the problems such as content of sulphur compounds is high, by the high-temperature burning process of the method, realize the homogeneity of output bamboo salt quality, be applicable to the needs that large-scale industrial is produced.Have:
1, the stage of the present invention leads to the method that bamboo salt is prepared in the intensification of nitrogen control oxygen; each stage is respectively by the difference passing into gaseous species; various active ingredient in raw material in preparing to make bamboo salt and mineral matter are effectively protected and maximum combination under different preparatory phases, the highly effective quality that improve bamboo salt.
2, the stage of the present invention leads to nitrogen control oxygen and heats up that to prepare the method calcining heat of bamboo salt low, and maximum temperature is 810 DEG C, and the heating of whole preparation process and constant temperature time are 2-3 hour, reduce energy consumption, ensure that the quality of bamboo product salt.
3, the stage of the present invention leads to nitrogen control oxygen and heats up and prepare in the method for bamboo salt, and the length of bamboo chip is 2-5cm, and wide is 1.5-3cm, this size can ensure bamboo chip combine with sea salt after degree of calcination homogeneous, thus obtain the unified product of quality.
4, the stage of the present invention leads to nitrogen control oxygen and heats up product bamboo charcoal ash that the method for prepare bamboo salt obtains less and quality is high.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1
A preparation method for bamboo salt, concrete steps are:
(1) be laid on bamboo chip by sea salt, make bamboo chip and sea salt mixing be placed in calcining furnace, wherein, the consumption of described bamboo chip and sea salt and bamboo chip size are in table 1;
(2) three phases carries out processing preparation, wherein, first stage, emptying logical nitrogen heated up, open air intake valve, get rid of furnace air, nitrogen is passed in stove, nitrogen flow is 800-1000ml/min, be about 8min during ventilation, be then warming up to 200-240 DEG C, heating rate is 8-12 DEG C/min, ventilation terminates rear drain tap of first closing and closes air intake valve again, because bamboo chip intensification initial moisture is lost very fast, the form of bamboo chip itself can be kept after passing into nitrogen preferably, avoid the carbonization that the hot air in bamboo chip and burner hearth is too much and too early; When temperature rises to 810 DEG C, enter second stage oxygen supply to heat up, first open drain tap, open air intake valve again, heating rate is constant, this process passes into oxygen, oxygen flow is 500-600ml/min, 15min is about during ventilation, ventilation terminates rear drain tap of first closing and closes gas valve again, and its object mainly makes bamboo chip dewater carbonization and with the reacting completely of salt body, fully, make several mineral materials and molten salt bath joint efficiency in bamboo improve, due to the good leak tightness of high-temperature calcination container, can further improve the conversion ratio of bamboo salt finished product; Phase III remains temperature-resistant in calcining furnace, after keeping 40min, again pass into nitrogen, nitrogen flow is 600-1000ml/min, be about 4min during ventilation, Temperature fall process, salt is starched at cooling initial stage crystallisation by cooling under nitrogen protection, this process makes the bamboo salt of above-mentioned reaction gained avoid the air be passed in temperature-fall period to be again oxidized, can to obtain the bamboo salt of quality balance;
(3) natural cooling crystallization: after salt body mixture natural cooling crystallization to be calcined is down to room temperature, takes out, and is separated, pulverizes i.e. obtained bamboo salt.
Demonstration test
By above method step, use the amount that following bamboo chip and day evaporate brine, be prepared bamboo salt.And the main mine content of material of gained bamboo salt is detected.In gained testing result and crude salt and background technology, traditional bamboo technology of threonates obtains product and compares, and the results are shown in Table 1, table 2.Wherein, calcium, magnesium, potassium etc. adopt inductively coupled plasma emission spectrography to detect; Bamboo carbonation rate utilizes X-gamma ray spectrometer and DTG to calculate and obtains.
The product main mine material component content (unit: mg/kg) made in table 1 embodiment
As shown in Table 1, use conventional methods the content utilizing crude salt to produce bamboo salt wherein contained mineral matter and all have obvious reduction, the product adopting method of the present invention to obtain maintains the content of crude salt mineral substantially, runs off less, and calcining evenly, product quality is homogeneous.
The carbonation rate above embodiment being obtained to the temperature rise period at initial stage of bamboo salt sample detects, and averages, and the conversion rate of carbonization obtaining bamboo salt with conventional method contrasts, as shown in table 2.Traditional handicraft is adopted once to calcine the initial stage carbonation rate of bamboo salt apparently higher than the inventive method.And the bamboo salt adopting method of the present invention obtained, show higher bamboo salt quality.
In table 2 embodiment, bamboo salt prepares initial stage bamboo carbonation rate, later stage carbon ash formation rate and salt carbon separating effect.
Above-mentioned detailed description of carrying out with reference to the preparation method of embodiment to this kind of bamboo salt; illustrative instead of determinate; several embodiments can be listed according to institute's limited range, therefore in the change do not departed under general plotting of the present invention and amendment, should belong within protection scope of the present invention.
Claims (5)
1. a preparation method for bamboo salt, is characterized in that: concrete steps are:
(1) bamboo chip and sea salt mixing are placed in calcining furnace, wherein, bamboo chip 1-4 part, sea salt 6-9 part described in mark meter by weight;
(2) three phases carries out processing preparation, and wherein, the first stage is that emptying logical nitrogen heats up, and second stage is that oxygen supply heats up, and the phase III is logical nitrogen cooling, and salt is starched at cooling initial stage crystallisation by cooling under nitrogen protection;
(3) continue crystallisation by cooling: after the mixture crystallisation by cooling after calcining, take out, pulverize i.e. obtained bamboo salt.
2. the preparation method of bamboo salt according to claim 1, is characterized in that: mark meter bamboo chip 3 parts, sea salt 6-7 part by weight in described step (1).
3. the preparation method of bamboo salt according to claim 1, is characterized in that: in described step (1), the length of bamboo chip is 2-5cm, and wide is 1.5-3cm.
4. the preparation method of bamboo salt according to claim 1, it is characterized in that: in described step (2), the first stage is that emptying logical nitrogen heats up, concrete steps are: open air intake valve, nitrogen is passed in stove, nitrogen flow is 800-1000ml/min, be about 5-10min during ventilation, ventilation terminates rear drain tap of first closing and closes air intake valve again; In described step (2), second stage is that oxygen supply heats up, and concrete steps are: first open drain tap, then open air intake valve, pass into oxygen, oxygen flow is 500-600ml/min, is about 10-20min during ventilation, and ventilation terminates rear drain tap of first closing and closes gas valve again.
5. the preparation method of the bamboo salt according to claim 1 or 4, it is characterized in that: in described step (2), the first stage gets rid of furnace air, pass into nitrogen, nitrogen flow is 800-1000ml/min, 5-10min is about during ventilation, then be warming up to 200-240 DEG C, heating rate is 8-12 DEG C/min; When temperature rises to 810 DEG C or higher, enter second stage heating rate constant, this process passes into oxygen, and oxygen flow is 500-600ml/min, is about 10-20min during ventilation; Phase III remains temperature-resistant in calcining furnace, and after keeping 30-60min, again pass into nitrogen, nitrogen flow is 600-1000ml/min, is about 3-5min during ventilation, Temperature fall process.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105995916A (en) * | 2016-05-06 | 2016-10-12 | 宋新荣 | Making method of ampelopsis sinica bamboo salt |
| CN109363143A (en) * | 2018-11-27 | 2019-02-22 | 邹恩远 | A kind of bamboo salt calcining furnace and preparation method prepared with high reduction potential bamboo salt |
| CN110101061A (en) * | 2019-05-08 | 2019-08-09 | 郑兴福 | A kind of low sodium eats the mechanical production line and preparation method of bamboo salt |
| CN111811255A (en) * | 2020-06-19 | 2020-10-23 | 四川轻化工大学 | Machine is fired to formula of taking a breath bamboo salt |
| CN115770551A (en) * | 2022-12-12 | 2023-03-10 | 江苏苏盐井神股份有限公司 | Method for producing multifunctional dehumidifying agent and bamboo salt by using calcium chloride type brine |
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| CN105995916A (en) * | 2016-05-06 | 2016-10-12 | 宋新荣 | Making method of ampelopsis sinica bamboo salt |
| CN109363143A (en) * | 2018-11-27 | 2019-02-22 | 邹恩远 | A kind of bamboo salt calcining furnace and preparation method prepared with high reduction potential bamboo salt |
| CN110101061A (en) * | 2019-05-08 | 2019-08-09 | 郑兴福 | A kind of low sodium eats the mechanical production line and preparation method of bamboo salt |
| CN111811255A (en) * | 2020-06-19 | 2020-10-23 | 四川轻化工大学 | Machine is fired to formula of taking a breath bamboo salt |
| CN115770551A (en) * | 2022-12-12 | 2023-03-10 | 江苏苏盐井神股份有限公司 | Method for producing multifunctional dehumidifying agent and bamboo salt by using calcium chloride type brine |
| CN115770551B (en) * | 2022-12-12 | 2024-02-23 | 江苏苏盐井神股份有限公司 | Method for producing multifunctional dehumidifier and bamboo salt by using calcium chloride type brine |
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