CN105546945A - Coal briquette drying technology and coal briquette air drying room - Google Patents
Coal briquette drying technology and coal briquette air drying room Download PDFInfo
- Publication number
- CN105546945A CN105546945A CN201610008147.4A CN201610008147A CN105546945A CN 105546945 A CN105546945 A CN 105546945A CN 201610008147 A CN201610008147 A CN 201610008147A CN 105546945 A CN105546945 A CN 105546945A
- Authority
- CN
- China
- Prior art keywords
- drying
- moulded coal
- coal
- air
- drying room
- 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
- 238000001035 drying Methods 0.000 title claims abstract description 102
- 239000003245 coal Substances 0.000 title claims abstract description 101
- 239000004484 Briquette Substances 0.000 title abstract description 17
- 238000007605 air drying Methods 0.000 title abstract description 7
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 5
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 5
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 5
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 5
- 230000032258 transport Effects 0.000 claims description 5
- 229920000609 methyl cellulose Polymers 0.000 claims description 4
- 239000001923 methylcellulose Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000465 moulding Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 abstract 1
- 239000010883 coal ash Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000012797 qualification Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 229940099112 cornstarch Drugs 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- -1 efficiency is low Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
- F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention belongs to the technical field of coal briquette production technologies, and provides a coal briquette drying technology. The coal briquette drying technology comprises the following steps that Step 1, a raw material is mixed with an adhesive agent to form coal briquettes with the moisture content being 12-20wt%, and the coal briquettes are conveyed to drying baskets and sent to a drying room; Step 2, the temperature of the drying room is kept at minus 10 degrees to 100 degrees, and the coal briquettes are dried for 6-10d during which axial flow fans supply air to the drying room; and Step 3, after the moisture contents of the coal briquettes are reduced to below 4wt% and finished coal briquettes are formed, the drying baskets are directly transported, and discharged from a warehouse for sale. The invention also provides a coal briquette air drying room which comprises an air drying room part and the drying baskets arrayed on a wire mesh, wherein the axial flow fans are arranged at the top of the air drying room part; air vents are formed in one side or two sides of the air drying room part; the drying baskets comprise basket bodies and mesh-shaped fences arranged at the peripheries of the basket bodies; and forklift holes are formed in the bottoms of the basket bodies. With the adoption of the coal briquette drying technology and the coal briquette air drying room, the problems in the prior art that the moulding yield of the dried coal briquettes is low, the quality, strength and hardness of the dried coal briquettes are poor, a lot of manpower and material resources are required in drying, delivery and transportation processes of the coal briquettes, and coal dust pollution to the environment can be caused are solved.
Description
Technical field
The invention belongs to moulded coal technical field of producing, relate to the moulded coal drying process under a kind of low temperature normal temperature and moulded coal is carried out to the moulded coal hurricane drier of low temperature air drying.
Background technology
Moulded coal take fine coal as primary raw material, machined compressing by proportioning, mechanical strength and shape size required by concrete purposes, has some strength and size and different coal finished product.In prior art, the production technology of moulded coal mainly comprises raw material and prepares, broken, screening, batching, mixed, shaping, dry, store, packaging, wherein drying is a key link in production process, dry quality directly has influence on briquette molding qualification rate and shaping strength, in prior art, the drying mode of moulded coal is dries mode of heating drying by drying oven, this drying mode needs the heat providing temperature about 110 ~ 180 DEG C by burning coal, not only waste resource, also can cause certain pollution to environment, cause the generation of haze, and by moulded coal that drying oven is dried out, briquette molding difficulty and briquette strength is caused to be restricted because higher temperature molecular thermalmotion adds conference, its shaping qualification rate can only reach about 85%, all the other 15% can produce a large amount of coal ash dust and cause serious coal ash powder dust pollution to factory building and surrounding environment, also can increase the weight of the deterioration of haze further, by the moulded coal that drying oven is dried out, its shaping strength also can only reach 45kgf, intensity is low, difference of hardness, in conveying transportation, cracked phenomenon happens occasionally, not only reduce the quality of moulded coal, also can further to environment in transportation, on the other hand, moulded coal is dry by drying mode of heating, a large amount of manpower and materials are also needed to carry out carrying and monitoring in real time to moulded coal, efficiency is low, waste a large amount of human resources.In prior art, finished product moulded coal shovel is delivered by forklift by the transport of moulded coal mostly to lorry, needs more manpower, part moulded coal also can be caused cracked simultaneously, reduce product quality, can produce coal ash powder dust pollution simultaneously in scraper process.
Summary of the invention
The present invention proposes a kind of moulded coal drying process and moulded coal hurricane drier, solve in prior art, the briquette molding qualification rate that in moulded coal production process, drying goes out is low, poor quality, intensity difference of hardness, moulded coal drying and delivery transportation need a large amount of manpower and materials, also can cause the technical problem of coal ash powder dust pollution to environment simultaneously.
Technical scheme of the present invention is such:
A kind of moulded coal drying process, comprises the steps:
Step 1: the moulded coal that raw material and adding additives is mixed into water content 12wt% ~ 20wt% is delivered to drying basket and is transported to hothouse;
Step 2: hothouse temperature remains on-10 ~ 100 DEG C, dry 6h ~ 10d, period, hothouse was by axial flow blower air feed; Wherein-10 DEG C time drying 6 ~ 10d, drying 4 ~ 6d when 10 DEG C, drying 2 ~ 4d when 20 DEG C, drying 1 ~ 2d when 30 DEG C, dry 6h ~ 1d when 40 ~ 100 DEG C;
Step 3: moulded coal water content is down to below 4wt% for after finished product, directly transports drying basket outbound and sells.
As further technical scheme, in described step 1, binding agent is specially hydroxypropyl methylcellulose and/or methylcellulose.
As further technical scheme, in described step 1, the space of hothouse is specially 100m
3~ 1000m
3.
As further technical scheme, heat required when hothouse baking temperature is more than 30 DEG C in described step 1 adds hot-air by hot blast or hot furnace device to be provided.
As further technical scheme, described step 1 Axial-Flow blower fan provides the size of air quantity to be 1000m
3/ h ~ 1,000 ten thousand m
3/ h.
The present invention also proposes a kind of moulded coal hurricane drier, comprises
Bottom is provided with the hurricane drier of silk screen and at least one layer and is spaced at drying basket on described silk screen, the top of described hurricane drier is provided with axial flow blower, one or both sides are provided with ventilating opening, weather shield is provided with above described axial flow blower, described drying basket comprises framework and is arranged on the netted enclosing of described framework surrounding, is provided with forklift hole bottom described framework.
As further technical scheme, described drying basket is cylindrical or prismatic.
As further technical scheme, described framework top is provided with covering.
As further technical scheme, the height on described silk screen distance ground is 1 ~ 1.5m.
Beneficial effect of the present invention is:
1, hydroxypropyl methylcellulose is used to produce moulded coal as binding agent, normal temperature low temperature drying moulded coal is realized may, by the dry moulded coal of mode that low temperature normal temperature is air-cooled, the dry combustion furnace coal mode in the past that eliminates heats the coal resources carrying out drying, and eliminate carrying and the manpower and materials needed for real-time monitoring drying oven, thus greatly reduce production cost, avoid coal burning pollution on the environment simultaneously.
2, compared with the moulded coal that the moulded coal that goes out of drying and drier go out, avoid higher temperature molecular thermalmotion and strengthen the briquette molding difficulty caused, briquette molding qualification rate is made to bring up to 98% by 85%, almost one-shot forming can complete drying, thus save post forming, enhance productivity, reduce production cost, greatly reduce the pollution that non-shaped coal ash dust causes factory building and surrounding environment simultaneously.
3, compared with the moulded coal that the moulded coal that goes out of drying and drier go out, eliminate higher temperature molecular thermalmotion and strengthen the briquette strength restriction caused, briquette strength is made to have brought up to 100kgf by 45kgf, thus the moulded coal quality produced is greatly improved, thus greatly reduce generation cracked in moulded coal carrying, transportation.
4, eliminate restricted type output of coal and environment is caused to the drying oven greatly polluted simultaneously, the daily output making common factory be limited to 50 ~ 200t/d can realize the daily output of 3000t/d easily, also can not cause any pollution to environment simultaneously.
5, the moulded coal finished product be dried to directly is undertaken selling and transporting by drying basket, eliminate the heap sum forklift carrying of moulded coal, improve the quality of moulded coal, decrease the broken and coal ash powder dust pollution of moulded coal that scraper process causes, thus eliminate multiple links of production process, improve production efficiency.
6, under the normal temperature of-10 ~ 100 DEG C and cryogenic temperature, water content is the moulded coal of 12wt% ~ 20wt% can be all below water content 4wt% at 6h ~ 10d inner drying, thus meet the degree of drying that standard specifies, the common temperature of 20 DEG C also just can complete drying in 2 ~ 4 days simultaneously, therefore can be widely used in each area of nationwide, and all can produce throughout the year.
7, by the kiln dried patten's design of direct heating type coal for adding hot-air or directly without the need to heating, thus avoid the generation of the perils such as direct heating moulded coal ignition to be dried, substantially increase the security in production process.
After moulded coal is loaded drying basket by the moulded coal hurricane drier 8, in the present invention, the height being placed on distance ground on hurricane drier is on the silk screen of certain altitude, undertaken air-dry by axial flow blower blower fan, silk screen can make moulded coal fully contact with air with the drying basket combined type design be positioned on silk screen, thus air-dry effect can be brought up to the best.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is present invention process schematic flow sheet;
Fig. 2 is moulded coal hurricane drier structural representation in the present invention;
Fig. 3 is moulded coal hurricane drier side-looking structural representation in the present invention;
Fig. 4 is drying basket structural representation in the present invention.
In figure: 1-hurricane drier, 11-silk screen, 2-drying basket, 21-framework, the netted enclosing of 22-, 23-forklift hole, 24-hides, 3-ventilating opening, 4-axial flow blower, 5-weather shield.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As described in Figure 1, the present invention proposes a kind of moulded coal drying process, comprises the steps:
Step 1: the moulded coal that raw material and adding additives hydroxypropyl methylcellulose and/or methylcellulose are mixed into water content 12wt% ~ 20wt% is delivered to drying basket and is transported to hothouse;
Step 2: hothouse temperature remains on-10 ~ 100 DEG C, under the low temperature of the normal temperature of-10 ~ 40 DEG C or 40 ~ 100 DEG C, dry 6h ~ 10d, period hothouse to be continued by axial flow blower or interval provides 1000m
3/ h ~ 1,000 ten thousand m
3the air quantity of/h; Wherein-10 DEG C time drying 6 ~ 10d, drying 4 ~ 6d when 10 DEG C, drying 2 ~ 4d when 20 DEG C, drying 1 ~ 2d when 30 DEG C, dry 6h ~ 1d when 40 ~ 100 DEG C;
Step 3: moulded coal water content is down to below 4wt% for after finished product, directly transports drying basket outbound and sells.
In described step 1, binding agent also can also add the adjuncts such as bauxite, tapioca starch, bentonite, cornstarch, while not affecting bond effect, reduce production cost further.
Further, in described step 1, the space of hothouse is specially 100m
3~ 1000m
3.
Further, heat required when hothouse baking temperature is more than 30 DEG C in described step 1 adds hot-air by hot blast or hot furnace device to be provided.
In prior art, the drying of moulded coal carries out heat drying by drying oven to needing dry moulded coal direct baking mostly, what on the one hand technical staff was not bold go to attempt and creationary going uses normal temperature or low temperature drying mode to carry out drying to moulded coal, on the other hand, the binding agent of suitable normal temperature and low temperature drying is not found in actual production process yet, the applicant found through experiments, the moulded coal that hydroxypropyl methylcellulose or methylcellulose are produced as binding agent, goes to carry out normal temperature low temperature drying moulded coal best results.
As shown in Figure 2 to 4, the present invention also proposes a kind of moulded coal hurricane drier, is used for alternative Furnace drying briquette of the prior art, and it comprises
Bottom is provided with the hurricane drier 1 of silk screen 11 and at least one layer and is spaced at drying basket 2 on silk screen 11, the top of described hurricane drier 1 is provided with axial flow blower 4, one or both sides are provided with ventilating opening 3, weather shield 5 is provided with above axial flow blower 4, drying basket 2 comprises framework 21 and is arranged on the netted enclosing 22 of framework 21 surrounding, is provided with forklift hole 23 bottom framework 21.
After moulded coal is loaded drying basket 2 by the moulded coal hurricane drier in the present invention, the height being placed on distance ground on hurricane drier 1 is on the silk screen 11 of certain altitude, undertaken air-dry by axial flow blower 4 blower fan, silk screen 11 can make moulded coal fully contact with air with both drying baskets 2 combined type design be positioned on silk screen 11, thus air-dry effect can be brought up to the best.
Wherein use drying basket 2 splendid attire moulded coal to be preferred embodiment, drying basket 2 can also be other any dry moulded coals of splendid attire band and can ventilating, with a point effective casing of being used for such as drying box or dryness storehouse.
Further, drying basket 2 is cylindrical or prismatic.
Drying basket 2 is cylindrical or prismatic can better guiding by wind, if be cube, although be more suitable for transport, drying effect does not but have cylindrical or prismatic good.
Further, framework 21 top is provided with covering 24.
Further, silk screen 11 is 1 ~ 1.5m apart from the height on ground.
As in the table below, for the dry moulded coal of the dry moulded coal of high temperature drying stove and normal temperature low temperature drying room contrasts.
The dry moulded coal of the dry moulded coal of table 1 high temperature drying stove and normal temperature low temperature drying room contrasts
Although normal temperature low temperature drying room is dry compared with the drying of high temperature drying stove as can be seen from the above table, required drying time is slightly long, but the many aspects such as the environmental pollution of the production efficiency of the economic benefit brought, raising, the product quality of raising, minimizing, all have obvious advantage.
As shown in the table, the moulded coal being 12wt%, 15wt%, 18wt%, 20wt% for water content under normal temperature or low temperature different temperatures is dried to the following required time of water content 4wt%.
Table 2 normal temperature or low temperature drying moulded coal required time
Can draw from upper table, under the normal temperature of-10 ~ 100 DEG C and cryogenic temperature, water content is the moulded coal of 12wt% ~ 20wt% can be all below water content 4wt% at 6h ~ 10d inner drying, thus meet the degree of drying that standard specifies, the common temperature of 20 DEG C also just can complete drying in 2 ~ 4 days simultaneously, therefore can be widely used in each area of nationwide, and all can produce throughout the year.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a moulded coal drying process, is characterized in that, comprises the steps:
Step 1: the moulded coal that raw material and adding additives is mixed into water content 12wt% ~ 20wt% is delivered to drying basket and is transported to hothouse;
Step 2: hothouse temperature remains on-10 ~ 100 DEG C, dry 6h ~ 10d, period, hothouse was by axial flow blower air feed; Wherein-10 DEG C time drying 6 ~ 10d, drying 4 ~ 6d when 10 DEG C, drying 2 ~ 4d when 20 DEG C, drying 1 ~ 2d when 30 DEG C, dry 6h ~ 1d when 40 ~ 100 DEG C;
Step 3: moulded coal water content is down to below 4wt% for after finished product, directly transports drying basket outbound and sells.
2. a kind of moulded coal drying process according to claim 1, it is characterized in that, in described step 1, binding agent is specially hydroxypropyl methylcellulose and/or methylcellulose.
3. a kind of moulded coal drying process according to claim 1, it is characterized in that, in described step 1, the space of hothouse is specially 100m
3~ 1000m
3.
4. a kind of moulded coal drying process according to claim 1, is characterized in that, heat required when hothouse baking temperature is more than 30 DEG C in described step 1 adds hot-air by hot blast or hot furnace device to be provided.
5. a kind of moulded coal drying process according to claim 1, is characterized in that, described step 1 Axial-Flow blower fan provides the size of air quantity to be 1000m
3/ h ~ 1,000 ten thousand m
3/ h.
6. one kind realizes the moulded coal hurricane drier of moulded coal drying process described in claim 1 ~ 2 any one, it is characterized in that, comprise bottom to be provided with the hurricane drier (1) of silk screen (11) and at least one layer and to be spaced at drying basket (2) on described silk screen (11), the top of described hurricane drier (1) is provided with axial flow blower (4), one or both sides are provided with ventilating opening (3), described axial flow blower (4) top is provided with weather shield (5), described drying basket (2) comprises framework (21) and is arranged on the netted enclosing (22) of described framework (21) surrounding, described framework (21) bottom is provided with forklift hole (23).
7. a kind of moulded coal hurricane drier according to claim 6, is characterized in that, described drying basket (2) is for cylindrical or prismatic.
8. a kind of moulded coal hurricane drier according to claim 6, is characterized in that, described framework (21) top is provided with covering (24).
9. a kind of moulded coal hurricane drier according to claim 6, is characterized in that, the height on described silk screen (11) distance ground is 1 ~ 1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008147.4A CN105546945B (en) | 2016-01-07 | 2016-01-07 | A kind of moulded coal drying process and moulded coal hurricane drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008147.4A CN105546945B (en) | 2016-01-07 | 2016-01-07 | A kind of moulded coal drying process and moulded coal hurricane drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105546945A true CN105546945A (en) | 2016-05-04 |
| CN105546945B CN105546945B (en) | 2018-08-03 |
Family
ID=55826317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610008147.4A Expired - Fee Related CN105546945B (en) | 2016-01-07 | 2016-01-07 | A kind of moulded coal drying process and moulded coal hurricane drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105546945B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB947963A (en) * | 1961-06-17 | 1964-01-29 | Houilleres Bassin Du Nord | Apparatus for rendering smokeless by oxidation small agglomerates of carbonaceous substance |
| CN1731059A (en) * | 2005-08-03 | 2006-02-08 | 黄敬民 | Drying process for steel ball grinding wheel |
| CN101928619A (en) * | 2010-08-23 | 2010-12-29 | 马鞍山科达机电有限公司 | Forming method of lignite lump coal facilitating container transport |
| CN103131493A (en) * | 2013-03-14 | 2013-06-05 | 苗若鹏 | A kind of lignite forming and upgrading method |
| CN103911198A (en) * | 2014-04-09 | 2014-07-09 | 诸暨创欣环保科技有限公司 | Normal-temperature lignite drying and upgrading method |
-
2016
- 2016-01-07 CN CN201610008147.4A patent/CN105546945B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB947963A (en) * | 1961-06-17 | 1964-01-29 | Houilleres Bassin Du Nord | Apparatus for rendering smokeless by oxidation small agglomerates of carbonaceous substance |
| CN1731059A (en) * | 2005-08-03 | 2006-02-08 | 黄敬民 | Drying process for steel ball grinding wheel |
| CN101928619A (en) * | 2010-08-23 | 2010-12-29 | 马鞍山科达机电有限公司 | Forming method of lignite lump coal facilitating container transport |
| CN103131493A (en) * | 2013-03-14 | 2013-06-05 | 苗若鹏 | A kind of lignite forming and upgrading method |
| CN103911198A (en) * | 2014-04-09 | 2014-07-09 | 诸暨创欣环保科技有限公司 | Normal-temperature lignite drying and upgrading method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105546945B (en) | 2018-08-03 |
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Granted publication date: 20180803 Termination date: 20210107 |