CN1089116A

CN1089116A - Far-infrared paint for flue-curing tobacco

Info

Publication number: CN1089116A
Application number: CN 93100394
Authority: CN
Inventors: 高成轩
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-02
Filing date: 1993-01-02
Publication date: 1994-07-13

Abstract

The present invention relates to the production method of a kind of flue-cured tobacco, belong to the tobacco first baking process field with far ultrared paint.It is a kind of far ultrared paint that can directly be coated in the ferrite type in the tobacco curing barn, and this coating can improve the temperature field in the barn after processing, increases the characteristics of barn temperature (i.e. insulation), makes the tobacco leaf of baking improve a grade.

Description

Far-infrared paint for flue-curing tobacco

The present invention relates to a kind of rural area tobacco first baking barn far ultrared paint, belong to the first roasting process field of tobacco leaf.

At present, the first roasting processing of China's rural area tobacco leaf all is to carry out in bright coal, bavin are the barn of thermal source, and the hot air passage of this barn mostly adopts pottery products such as brick and tile to be built into, have that energy consumption is big, thermo-efficiency is low, baking cycle is long, and muscle, the sheet oven dry time difference is big, easily causes blue veins pornographic movie and blue or green cigarette, it is poor to bake the tobacco leaf smell, be worth lowly, oil content and fragrance loss are big, of poor quality in the blade, not only the peasant economy loss is big, and is unfavorable for the development of tobacco industry.Industrial mature far-infrared baking technology, generally be to use far-infrared element, only be suitable for electric heating, fuel oil, Sweet natural gas ... etc. the heat hot mode, its shortcoming be cost to, the numerous tobacco growers of China are difficult to adapt to it, Chinese patent (patent No. CN87106751.X number) discloses a kind of method that tobacco curing barn hot air passage far ultrared paint coated is transformed that is used for, and the present invention further discloses the concrete prescription of its described coating and makes production technique.

The objective of the invention is to directly to be coated in the far ultrared paint in the tobacco curing barn, this ferrite-type coating has the advantages that to improve barn temperature field and insulation, thereby improves the roasting quality of tobacco leaf, cuts down the consumption of energy, and increases farmers' income.

Particular content of the present invention is: do not change the tame village barn internal structure that existing farm implements have, directly the far-infrared radiation insulation is coated in barn inside, make the temperature field in the barn even, produce the required warm field condition of baking orange tobacco leaf, this far ultrared paint is a ferrite coating, it comprises coatings capable of preventing from far infrared radiation and infrared metope thermal insulation coatings far away, and the prescription of coatings capable of preventing from far infrared radiation is: Fe ₂O ₃60～75%; MnO ₂15～25%; SiO ₂5～12%; CuO2.5～5%; CoO 2.5%; Al ₂O ₃1.5～3%; ZnO 0.5～1.5%; MgO 0.5～1.5%; As also being incubated in the barn, can both obtain far infrared metope thermal insulation coatings at the basic enterprising one-step optimization of above-mentioned prescription, filling a prescription is: Fe ₂O ₃60～85%; MgO 10～15%; ZnO 10～15%; MnO 2.5; CuO 2.5%.The function of coatings capable of preventing from far infrared radiation is to be the far-infrared radiation line with thermal power transfer, because the mode of radiative transfer is more even, and the far ir ray wavelength and tobacco leaf coupling that send, absorbs easily, make baking evenly, reach the effect of modulating the orange tobacco leaf; The function of metope thermal insulation coatings is the electromagnetic radiation line that absorbs various wavelength, launches the radiation of identical wavelength again, make reach in the barn temperature field evenly, heat preservation effect, above-mentioned far ultrared paint can be coated in the baking oven simultaneously, also can apply respectively.The technology of making far ultrared paint is: with raw material pulverizing is the powdery industrial chemicals, join in the ball mill, add water with 8: 7 weight ratios, wet-milling broke into suspension and the good slurry of brushing property with material water more than 24 hours, and (water: binding agent=3: 2) the temperature mill is 4 hours to add binding agent again, promptly make far ultrared paint, tinning, packing is dispatched from the factory.

The technical parameter of qualified product is: total radiation rate 〉=0.72; Suspension leaves standstill no layering in 1 hour; Granulosa: 250um standard sieve throughput 80%; Denseness flour percentage composition m is 40＜m＜60.

Embodiment 1:

Fe ₂O ₃6%;MnO ₂20%;SiO ₂12%;CuO 25%;CoO 2.5%;Al ₂O ₃2%;ZnO 0.5%;MgO 0.5%

Raw material is mixed with powdery according to the above ratio, adds water with 8: 7 weight ratios, put into the ball mill wet-milling 24 hours, add water glass of binder again, wet-milling made product reach qualified technical indicator about 4 hours, during actual the use, and radiant ratio palm fibre 0.81 energy-saving efficiency 20%.

Embodiment 2:

Fe ₂O ₃75%;MnO ₂15%;SiO ₂5%;Al ₂O ₃1%;ZnO 0.5%;MgO 0.5%;CuO 1.5%;CoO 1.5%;

Raw material prepared according to the above ratio get rid of powdery, add water, wet-milling more than 24 hours in ball mill, add water glass of binder again with 8: 7 weight ratios, continue wet-milling about 4 hours, make product reach technical target of the product, during actual the use, radiant ratio reaches 0.79, energy-saving efficiency 15%.

Embodiment 3:

Fe ₂O ₃75%;MgO 10%;ZnO 10%;MnO ₂2.5%;CuO 2.5%。Raw material is pulverized back preparation in proportion, add, and put in the ball mill humidity 20 hours, add common building coating stick again, continue wet-milling 4 hours, make product reach product technology and arrange mark with 8.7 weight ratios.During actual the use, radiant ratio 0.75, insulating efficiency 83%.

Embodiment 4:

Fe ₂O ₃65%;MgO 15%;ZnO 15%;MnO 2.5%;CuO 2.5%。With the raw material pulverizing powdering, preparation in proportion, because of adding water through 8: 7 weight ratios, wet-milling 20 hours through after, add common building coating adhesive again, continue wet-milling 4 hours, it is qualified making product reach technical target of the product, during actual the use, radiant ratio reaches 0.76, and insulating efficiency is 85%.

Process operation of the present invention is:

Ore is selected and is broken: same quarrying industry

The dry grinding powder: surmise in the ore drying below 1 cubic centimetre and handle, in the MQ500 ball mill, change the about 4-6 of rotating speed hour with per minute 50-60, make ore break into powder, sieve through 300 orders (the 333um length of side) sieve aperture, remove seed, it is stand-by to obtain powder.

Batching: go into to waste the machine barrel in each powder of powdery industrial chemicals formula table ratio weighing, make total amount account for 30% of grinding machine capacity.

Batch mixing: the powder mixture dry bulb was ground 4 hours, each powder raw material granularity is reached more than 320 orders.

Wet-milled slurry: with ratio of water to material 1: the 1(weight ratio) add water and go into mill, ball milling 46 hours.

Denseness is adjusted: with reference to dispatching from the factory the denseness requirement, add little water again, make ratio of water to material be about 5: 4, write down and add water inventory.

Convert tackiness agent: add modulus and be 3.2 neutral water glass, make sticking water ratio be about 2: 3, rewetting mill 2 hours.

Be damp proof during wet-milling, can fill up cement bag paper under cover plate, water glass brushing paper compresses cover plate, opens the face wet-milling again through 3-5 minute, can reduce seepage.

Check, pack, dispatch from the factory.

It is extensive that the present invention has raw material sources, low cost of manufacture, and simple joint is received fuel and is reached 15～25%, the tobacco leaf oil branch is kept after the baking, and color mostly is the advantages such as orange colour, can make the grade after the tobacco leaf baking improve a class, can increase tobacco grower's income, also be beneficial to China's tobacco business development.

Claims

1, a kind of flue-cured tobacco far ultrared paint product is characterized in that:

(a), the prescription of far infrared spoke coating is: Fe ₂O ₃60～75%; MnO ₂15～25%; SiO ₂5～12%; CuO 2.5～5%; CoO 2.5%; Al ₂O ₃1.5～3%; ZnO 0.5～1.5%; MgO 0.5～1.5%,

(b), the prescription of far infrared metope thermal insulation coatings is: Fe ₂O ₃60～75%; MgO 10～15%; ZnO 10～15%; MnO 2.5%; CuO 2.5%.

2, flue-cured tobacco according to claim 1 is coated with the usefulness of far ultrared paint, it is characterized in that far ultrared paint is directly used in to be coated in the tobacco curing barn, and far ultrared paint comprises coatings capable of preventing from far infrared radiation and far infrared wall thermal insulation coatings.

3, flue-cured tobacco according to claim 1 and 2 is characterized in that by above-mentioned joining the powdery industrial chemicals being added ball mill with the production method of far ultrared paint, adds water with 8: 7 weight ratios, wet-milling 24 hours.

4, according to the production method of claim 1 or 3 described flue-cured tobaccos usefulness far ultrared paints, it is characterized in that the powdery industrial chemicals being added ball mill by above-mentioned joining, add water with 8: 7 weight ratios, wet-milling 24 hours.