CN101733809B - Method for manufacturing formed plate by utilizing papermaking wastes - Google Patents
Method for manufacturing formed plate by utilizing papermaking wastes Download PDFInfo
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- CN101733809B CN101733809B CN2009102727429A CN200910272742A CN101733809B CN 101733809 B CN101733809 B CN 101733809B CN 2009102727429 A CN2009102727429 A CN 2009102727429A CN 200910272742 A CN200910272742 A CN 200910272742A CN 101733809 B CN101733809 B CN 101733809B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to a method for manufacturing a formed plate by utilizing papermaking wastes, comprising the following steps of: A. preparing cut-off dust-removing material residues, slurry residues, papermaking sludge and boil flue gas-desulphurizing gypsum by weight part, uniformly mixing, drying and then pulverizing into a powdery mixed raw material; B. preparing the powdery mixed raw material, a magnesium lignosulfonate solution or a calcium lignosulphonate solution and plant straw particles by weight part, and uniformly mixing to obtain a basic raw material of the plate; and C. placing the basic raw material of the plate in a forming mould and implanting a strip-shaped skeleton or a grid-shaped skeleton, slicking, demoulding after forming the basic raw material of the plate by the compression of a press machine, and then sizing and drying to obtain the product of the formed plate. The method comprehensively utilizes a plurality of papermaking wastes and has the advantages of simple technology, low production cost, good quality, no three-waste discharge and no environmental pollution, and the manufactured formed plate has the advantages of high adhesive strength, high mechanical properties comprising compression resistance, tensile resistance, bending resistance, impact resistance and the like, good processing performance and wide application range.
Description
Technical field
The present invention relates to utilize papermaking waste to make the preparation method of sheet forming, relate in particular to and utilize the mud that produces after a large amount of blank dedusting material slags, screenings and the sewage disposal that produces in the production process of paper mill, boiler flue gas desulfurization gypsum etc., produce the preparation method of sheet forming material with certain density and specification as the basic production raw material.
Background technology
At present, the paper mill sludge that the paper mill produces after to a large amount of blank dedusting material slag, screenings and the sewage disposal that produce in the production process and the main treating method of boiler flue gas desulfurization gypsum the like waste are: the one, and it is mixed into burn in the coal, the 2nd, look for local landfill, the 3rd, the filler that wherein mud and boiler flue gas desulfurization gypsum are made into papermaking or plastic industry.Though so temporarily solved the handling problem of papermaking waste, had following deficiency:
1. papermaking waste is mixed into and burnt in the coal, can form new waste gas, residue contamination;
2. papermaking waste is looked for local landfill, the one, the land occupation resource, the 2nd, need a large amount of haulage vehicle and fund;
3. wasted resource.Because the main component in blank dedusting material slag, the screenings is heteroproteose cell, short fiber; And Sewage Plant is in the process of disposing of sewage, and chemicals has been neutralized, and the composition of paper mill sludge is fiber and the papermaking mineral filler of not eaten up by biology.Above-mentioned discarded object is burnt or landfill, is not turned waste into wealth, make the best use of everything,
4. although it is feasible paper mill sludge and boiler flue gas desulfurization gypsum to be made into the filler of papermaking or plastic industry, consumption is limited, can not digest the discarded object that produces in the production process of paper mill to greatest extent.
Chinese patent publication number: CN 1773015, open day: on May 17th, 2006, denomination of invention " medium-density plate and the production method of utilizing paper mill sludge to produce ", proposed with the paper mill sludge is raw material, through mechanical dehydration, moulding and to be combined into moisture content be 60%～80% wet medium-density plate, then wet medium-density plate is put into that the squeezing dryer further dewaters, high pressure typing, hyperthermia drying and make the technical scheme of medium-density plate finished product.Solve paper mill sludge secondary pollution problem, made the paper mill sludge recycling, realized zero-emission, saved land resource; This medium-density plate can not produce harmful pollutants in use, under nature, can effectively be decomposed by biological, can not produce secondary pollution.But still there is following deficiency in this technical scheme, the one, and the medium-density plate adhesive strength is low, and mechanical performance is relatively poor, a little less than particularly resistance to compression, bending resistance and the shock resistance, can only use with interior lining panel or decorative panel as packing.The 2nd, this technical scheme moulding and the wet medium-density plate moisture content that is combined into are too high, and this makes the energy consumption in the medium-density plate subsequent production process increase, and the production cycle prolongs, and output and production efficiency can't improve.The 3rd, because paper mill paper mill sludge composition in each not the same in period, tend to cause the quality discrepancy of medium-density plate product, the quality instability of medium-density plate product.The 4th, fail to accomplish the comprehensive utilization of the multiple discarded object in paper mill, this technical scheme is only utilized paper mill sludge, fails to solve the problem of utilizing that produces blank dedusting material slag, screenings and boiler flue gas desulfurization gypsum the like waste in the production process of paper mill.
Summary of the invention
The objective of the invention is to overcome the sheet material bad mechanical property that prior art is produced, production efficiency is low, defective and the deficiency low to the utilization rate of papermaking waste, a kind of preparation method of utilizing papermaking waste to make sheet forming is proposed, the inventive method is comprehensive to the utilization of papermaking waste, constant product quality, production efficiency height and three-waste free discharge, the profiled sheeting goods of being produced, adhesive strength height, resistance to compression, tension, bending resistance, good mechanical properties such as shock resistance, have wide range of applications, be particularly suitable for large-scale industrialization production.
The object of the present invention is achieved like this: utilize papermaking waste to make the method for sheet forming, may further comprise the steps:
A. choose 5～10 parts air-dry of cut-out dedusting material slags, 5～10 parts of screenings by weight, moisture content is 50～70 parts of 50%～70% paper mill sludges, 10～15 parts in boiler flue gas desulfurization gypsum, and oven dry obtains the powder-mixed raw material after ball mill is pulverized;
B. choose 65～80 parts of powder-mixed raw materials by weight, mass percent concentration is 20～35 parts of 35%～40% magnesium lignosulfonate or calcium lignosulfonate solutions, air-dry back length is 10～15 millimeters 0～10 part of straw particle, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, and in the thickness direction with strip skeleton or latticed skeleton implantation sheet material base stock, wipe off, exert pressure from the thickness direction of mould with forcing press, with the demoulding after the sheet material base stock compression moulding in the mould, after typing, the dry processing, promptly obtain the sheet forming goods.
Further, utilize papermaking waste to make the method for moulding papermaking sheet paper clamping plate goods, may further comprise the steps:
A. choose 5 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 70 parts of 65% paper mill sludges, 15 parts in boiler flue gas desulfurization gypsum, and oven dry obtains the powder-mixed raw material after ball mill is pulverized, and powder fineness wherein is 50～100 orders;
B. choose 75 parts of powder-mixed raw materials by weight, mass percent concentration is 25 parts of 40% magnesium lignosulfonate or calcium lignosulfonate solutions, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, 6～8 on strip skeleton is implanted on the long limit that is parallel to mould uniformly at intervals, or implants the latticed skeleton of one deck, again with the full mould of sheet material base stock filling, wipe off, exert pressure from the thickness direction of mould with forcing press, it is 0.8～1kg/cm that the sheet material base stock in the mould is pressed into density
3The demoulding behind the aftershaping promptly obtains papermaking sheet paper clamping plate moulded products after typing, the dry processing.
Further, utilize papermaking waste to make the method for moulding lightweight partition wall slab products, may further comprise the steps:
A. choose 10 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 65 parts of 65% paper mill sludges, 10 parts in boiler flue gas desulfurization gypsum, air-dry back length is 10～15 millimeters 5 parts of straw particles, oven dry obtains the powder-mixed raw material after ball mill is pulverized, and powder fineness wherein is 50～100 orders;
B. choose 70 parts of powder-mixed raw materials by weight, mass percent concentration is 30 parts of 40% magnesium lignosulfonate or calcium lignosulfonate solutions, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, 6～12 on strip skeleton is implanted on the long limit that is parallel to mould uniformly at intervals, or implants the latticed skeleton of one deck, again with the full mould of sheet material base stock filling, wipe off, exert pressure from the thickness direction of mould with forcing press, it is 0.45～0.8kg/cm that the sheet material base stock in the mould is pressed into density
3The back demoulding promptly obtains lightweight partition wall sheet metal forming goods after typing, the dry processing.
Above-mentioned method further may further comprise the steps:
D. to the surface of sheet forming goods spraying one deck varnish, promptly obtain waterproof sheet forming goods.
In the described steps A, the straw particle is the cereal plants stalk particle that grows grass.
Among the described step C, the strip skeleton is bamboo chip or plastic sheet, and latticed skeleton is steel wire or bamboo chip net or plastic wire.
The thickness in described strip skeleton cross section is 2～6 millimeters, and width is 4～10 millimeters, and the length of strip skeleton is lacked 15～30 millimeters than the interior empty length of mould.
Among the described step C, divide three pressurizations, for the first time pressure is added to 5～15kg/cm with forcing press
2The back kept pressurized state 20 seconds, for the second time pressure was added to 15～30kg/cm then
2The back kept pressurized state 30 seconds, at last pressure was added to 20～40kg/cm
2The back kept pressurized state 30 seconds, and it is 0.45～1kg/cm that the sheet material base stock in the mould is pressed into density
3After, i.e. compression moulding.
Among the described step C, it is that the stereotype plate material for the treatment of after the demoulding is stacked neatly that typing is handled, and applies 4～6kg/cm to the lamination plane for the treatment of the stereotype plate material then
2Pressure, and stopped 10～30 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling.
Among the described step C, the dry processing is that typing aftershaping plate is sent into tunnel drier oven dry or natural air drying.
Compared with prior art, the invention has the beneficial effects as follows:
1. the inventive method has made full use of dedusting material slag, screenings, paper mill sludge and boiler flue gas desulfurization gypsum the like waste, above-mentioned discarded object is dry in advance, pulverizing, fibrous material wire-dividing broom purification after ball mill is pulverized in the discarded object, mineral filler such as mud and gypsum then forms the fine powder material that mixes, fiber material and powder constitute the powder-mixed raw material jointly, be used to make sheet forming, material composition is even, and energy consumption is little, and is easy to process, with short production cycle, be particularly suitable for large-scale industrialization production.
2. the inventive method improves the adhesive strength and the Forming Quality of sheet forming by boiler flue gas desulfurization gypsum and adhesive, and passes through two to three high-temperature process, and the sheet forming that papermaking waste is carried out sterilizing, manufacturing is inexpensive, the environmental protection practicality.
3. the inventive method has added strip skeleton or latticed skeleton in sheet forming, significantly improved the bending strength of sheet forming, resistance to compression, tension, mechanical performance such as bending resistance and shock resistance has all surpassed the technical indicator of load-bearing plank or lightweight partition wallboard, and sheet forming has machinabilities such as good nail, brill, plane, saw, has widened the application of sheet forming goods.
4. the inventive method adopts forcing press to divide to increase progressively extrusion forming 3 times, its objective is that the air that allows in the sheet material base stock is fully discharged, make the inside of sheet forming goods not have minute bubbles, density is even, be suitable for making the cut deal material more than 8 millimeters, steady quality is reliable.
5. the inventive method has fully utilized multiple papermaking waste all sidedly, avoids it to become new pollution sources once more, and the inventive method is to the utilization rate height of papermaking waste, technology is easy, and production cost is low, and quality is good, three-waste free discharge, environmentally safe, made sheet material adhesive strength height, resistance to compression, tension, bending resistance, mechanical performance height such as shock resistance, good processability has wide range of applications.
The specific embodiment
The present invention is described in further detail below in conjunction with the specific embodiment:
The method of utilizing papermaking waste to make sheet forming of the present invention may further comprise the steps:
A. choose 5～10 parts air-dry of cut-out dedusting material slags, 5～10 parts of screenings by weight, moisture content is 50～70 parts of 50%～70% paper mill sludges, 10～15 parts in boiler flue gas desulfurization gypsum, and oven dry obtains the powder-mixed raw material after ball mill is pulverized; Fiber material wire-dividing broom purification after ball mill is pulverized in the discarded object more helps improving the switching performance of itself and powder, and mineral fillers such as mud and gypsum then form the powder that mixes, and the fineness of powder is about between 50～100 orders.
B. choose 65～80 parts of powder-mixed raw materials by weight, mass percent concentration is 20～35 parts of 35%～40% magnesium lignosulfonate or calcium lignosulfonate solutions, air-dry back length is 10～15 millimeters 0～10 part of straw particle, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, and in the thickness direction with strip skeleton or latticed skeleton implantation sheet material base stock, wipe off, exert pressure from the thickness direction of mould with forcing press, with the demoulding after the sheet material base stock compression moulding in the mould, after typing, the dry processing, promptly obtain the sheet forming goods.
Above-mentioned method further may further comprise the steps:
D. to the surface of sheet forming goods spraying one deck varnish, promptly obtain waterproof sheet forming goods.
In the described steps A, the straw particle is the cereal plants stalk particle that grows grass, as straw or straw particle.
Among the described step C, the strip skeleton is bamboo chip or plastic sheet, and latticed skeleton is steel wire or bamboo chip net or plastic wire.
The thickness in described strip skeleton cross section is 2～6 millimeters, and width is 4～10 millimeters, and the length of strip skeleton is lacked 15～30 millimeters than the interior empty length of mould.
Among the described step C, divide three pressurizations, for the first time pressure is added to 5～15kg/cm with forcing press
2The back kept pressurized state 20 seconds, for the second time pressure was added to 15～30kg/cm then
2The back kept pressurized state 30 seconds, at last pressure was added to 20～40kg/cm
2The back kept pressurized state 30 seconds, and it is 0.45～1kg/cm that the sheet material base stock in the mould is pressed into density
3After, i.e. compression moulding.
Among the described step C, it is that the stereotype plate material for the treatment of after the demoulding is stacked neatly that typing is handled, and applies 4～6kg/cm to the lamination plane for the treatment of the stereotype plate material then
2Pressure, and stopped 10～30 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling.
Among the described step C, the dry processing is that typing aftershaping plate is sent into tunnel drier oven dry or natural air drying.
Embodiment 1
Adopt the inventive method production papermaking sheet paper clamping plate, the specification of papermaking sheet paper clamping plate is 787 * 1092 millimeters, 10 millimeters of thicknesss of slab.
Utilize papermaking waste to make the method for moulding papermaking sheet paper clamping plate goods, may further comprise the steps:
A. choose 5 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 70 parts of 65% paper mill sludges, 15 parts in boiler flue gas desulfurization gypsum, above four kinds of raw materials are packed into mix in the mixer, under 140～150 ℃ hot blast temperature, carry out drying through tunnel drier, oven dry obtains the powder-mixed raw material after ball mill is pulverized, and powder fineness wherein is 100 orders, fiber material wire-dividing broom purification;
B. choose 75 parts of powder-mixed raw materials by weight, mass percent concentration is 25 parts of 40% magnesium lignosulfonate or calcium lignosulfonate solutions, packing into mixes in the mixer, obtain the sheet material base stock of papermaking sheet paper clamping plate, and it is standby that it is pumped to feed bin;
C. the mould of selecting dies cavity to be of a size of 787 * 1092 * 30 millimeters installs on hydraulic press, the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, the long limit that is parallel to mould, implant 6～8 on strip skeleton uniformly at intervals, described strip skeleton is that cross dimensions is about 2 * 2 * 4 millimeters bamboo chip, the length of described bamboo chip is that the interior empty length of mould deducts 20 millimeters, or the latticed skeleton of implantation one deck, again with the full mould of sheet material base stock filling, wipe off, start hydraulic press and exert pressure from the thickness direction of mould, in the pressing process, hydraulic press divides 3 pressurizations: the 1st time pressure is added to 15kg/cm
2After keep-up pressure state 20 seconds, to be pressurized to pressure for the 2nd time be 30kg/cm to hydraulic press then
2Keep-up pressure state 30 seconds, it is 40kg/cm that last hydraulic press is pressurized to pressure for the 3rd time
2, the state demoulding after 30 seconds that keep-ups pressure, obtaining density is 0.8～1kg/cm
3, thickness of slab is 10 millimeters, length * wide specification be 787 * 1092 millimeters treat the stereotype plate material, the stereotype plate material for the treatment of after 6～10 demouldings is stacked neatly, apply 4～6kg/cm to the lamination plane for the treatment of the stereotype plate material then
2Pressure, and stopped 15～20 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling, with the sheet material natural air drying after the typing, and, promptly obtain papermaking sheet paper clamping plate moulded products to the surface of sheet material spraying one deck varnish.This moulded products can be realized the water-proof function of papermaking sheet paper splint product.Answer user's requirement,, also can produce and beautify effect papermaking sheet paper clamping plate by changing paint kind and color.Through testing: the physical property of the papermaking sheet paper clamping plate moulded products that present embodiment is made has met or exceeded existing papermaking sheet paper clamping plate.
Embodiment 2
Adopt the inventive method production papermaking sheet paper clamping plate, the specification of papermaking sheet paper clamping plate is 787 * 1092 millimeters, 15 millimeters of thicknesss of slab.
Utilize papermaking waste to make the method for moulding papermaking sheet paper clamping plate goods, may further comprise the steps:
A. choose 10 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 65 parts of 70% paper mill sludges, 15 parts in boiler flue gas desulfurization gypsum, above four kinds of raw materials are packed into mix in the mixer, under 140～150 ℃ hot blast temperature, carry out drying through tunnel drier, oven dry obtains the powder-mixed raw material after ball mill is pulverized, and powder fineness wherein is 80 orders, fiber material wire-dividing broom purification;
B. choose 75 parts of powder-mixed raw materials by weight, mass percent concentration is 25 parts of 35%～40% magnesium lignosulfonate or calcium lignosulfonate solutions, packing into mixes in the mixer, obtain the sheet material base stock of papermaking sheet paper clamping plate, and it is standby that it is pumped to feed bin;
C. the mould of selecting dies cavity to be of a size of 787 * 1092 * 45 millimeters installs on hydraulic press, the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, the long limit that is parallel to mould, implant 6～8 on strip skeleton uniformly at intervals, described strip skeleton is that cross dimensions is about 2 * 2 * 4 millimeters bamboo chip, the length of described bamboo chip is that the interior empty length of mould deducts 20 millimeters, or the latticed skeleton of implantation one deck, again with the full mould of sheet material base stock filling, wipe off, start hydraulic press and exert pressure from the thickness direction of mould, in the pressing process, hydraulic press divides 3 pressurizations: the 1st time pressure is added to 15kg/cm
2After keep-up pressure state 20 seconds, to be pressurized to pressure for the 2nd time be 30kg/cm to hydraulic press then
2Keep-up pressure state 30 seconds, it is 40kg/cm that last hydraulic press is pressurized to pressure for the 3rd time
2, the state demoulding after 30 seconds that keep-ups pressure, obtaining density is 0.8～1kg/cm
3, thickness of slab is 15 millimeters, length * wide specification be 787 millimeters * 1092 millimeters treat the stereotype plate material, the stereotype plate material for the treatment of after 6～10 demouldings is stacked neatly, apply 4～6kg/cm to the lamination plane for the treatment of the stereotype plate material then
2Pressure, and stopped 20～30 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling, the sheet material after the typing is sent into the tunnel drier oven dry, and, promptly obtains papermaking sheet paper clamping plate moulded products to the surface of sheet material spraying one deck varnish.Through testing: the physical property of the papermaking sheet paper clamping plate moulded products that present embodiment is made has met or exceeded existing papermaking sheet paper clamping plate.
Embodiment 3
Adopt the inventive method production lightweight partition wall sheet metal forming goods, the specification of lightweight partition wall sheet metal forming goods is 2000 * 800 millimeters, 80 millimeters of thicknesss of slab.
Utilize papermaking waste to make the method for lightweight partition wall sheet metal forming goods, may further comprise the steps:
A. choose 10 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 65 parts of 50% paper mill sludges, 10 parts in boiler flue gas desulfurization gypsum, air-dry back length is 10～15 millimeters 5 parts of straw particles, above five kinds of raw materials are packed into to mix in the mixer, carries out drying through tunnel drier under 140～150 ℃ hot blast temperature, and oven dry obtains the powder-mixed raw material after ball mill is pulverized, powder fineness wherein is 50 orders, fiber material wire-dividing broom purification;
B. choose 70 parts of powder-mixed raw materials by weight, mass percent concentration is 30 parts of 35%～40% magnesium lignosulfonate or calcium lignosulfonate solutions, mixes, and obtains the sheet material base stock and it is pumped to feed bin standby;
C. the mould of selecting dies cavity to be of a size of 2000 * 800 * 160 millimeters installs on hydraulic press, the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, the long limit that is parallel to mould, implant 6～8 on strip skeleton uniformly at intervals, described strip skeleton is that cross dimensions is about 5 * 5 * 8 millimeters bamboo chip, the length of described bamboo chip is that the interior empty length of mould deducts 20 millimeters, or the latticed skeleton of implantation one deck, again with the full mould of sheet material base stock filling, wipe off, start hydraulic press and exert pressure from the thickness direction of mould, in the pressing process, hydraulic press divides 3 pressurizations: the 1st time pressure is added to 5kg/cm
2After keep-up pressure state 20 seconds, to be pressurized to pressure for the 2nd time be 15kg/cm to hydraulic press then
2Keep-up pressure state 30 seconds, it is 20kg/cm that last hydraulic press is pressurized to pressure for the 3rd time
2, the state demoulding after 30 seconds that keep-ups pressure, obtaining density is 0.45～0.8kg/cm
3, thickness of slab is 80 millimeters, length * wide specification be 2000 * 800 millimeters treat the stereotype plate material, the stereotype plate material for the treatment of after 4～6 demouldings is stacked neatly, apply 4～6kg/cm to the lamination plane for the treatment of the stereotype plate material then
2Pressure, and stopped 20～30 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling, the sheet material natural air drying with after the typing promptly obtains lightweight partition wall sheet metal forming product molding goods.Through testing: the lightweight partition wall sheet metal forming physical properties of articles that present embodiment is made has met or exceeded existing lightweight partition wall sheet metal forming goods.
Embodiment 4
Adopt the inventive method production lightweight partition wall sheet metal forming goods, the specification of lightweight partition wall sheet metal forming goods is 2000 * 800 millimeters, 120 millimeters of thicknesss of slab.
Utilize papermaking waste to make the method for lightweight partition wall sheet metal forming goods, may further comprise the steps:
A. choose 10 parts air-dry of cut-out dedusting material slags, 5 parts of screenings by weight, moisture content is 65 parts of 60% paper mill sludges, 10 parts in boiler flue gas desulfurization gypsum, air-dry back length is 10～15 millimeters 10 parts of straw particles, above five kinds of raw materials are packed into to mix in the mixer, carries out drying through tunnel drier under 140～150 ℃ hot blast temperature, and oven dry obtains the powder-mixed raw material after ball mill is pulverized, powder fineness wherein is 50 orders, fiber material wire-dividing broom purification;
B. choose 70 parts of powder-mixed raw materials by weight, mass percent concentration is 30 parts of 35%～40% magnesium lignosulfonate or calcium lignosulfonate solutions, mixes, and obtains the sheet material base stock and it is pumped to feed bin standby;
C. the mould of selecting dies cavity to be of a size of 2000 * 800 * 240 millimeters installs on hydraulic press, the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, implant the latticed skeleton of one deck, the bamboo chip grid that described latticed skeleton forms for binding, the cross dimensions of bamboo chip is about 3 * 3 * 6 millimeters bamboo chip in the bamboo chip grid, the length of single grid element center line * wide size is about 198 * 78 millimeters in the described bamboo chip grid, the length of bamboo chip grid and width equal length and width empty in the mould and deduct 20 millimeters, again with the full mould of sheet material base stock filling, wipe off, starting hydraulic press exerts pressure from the thickness direction of mould, in the pressing process, hydraulic press once is pressurized to 20kg/cm
2, the state demoulding after 30 seconds that keep-ups pressure, obtaining density is 0.45～0.8kg/cm
3, thickness of slab is 120 millimeters, length * wide specification be 2000 * 800 millimeters treat the stereotype plate material, the stereotype plate material for the treatment of after 4～6 demouldings is stacked neatly, apply 4～6kg/cm to the lamination plane for the treatment of the stereotype plate material then
2Pressure, and stopped 20～30 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling, the sheet material after the typing is sent into the tunnel drier oven dry, promptly obtain lightweight partition wall sheet metal forming goods.The lightweight partition wall sheet metal forming physical properties of articles that present embodiment is made has met or exceeded existing lightweight partition wall sheet metal forming goods.
According to the step of previous embodiment, utilize papermaking waste the present invention can also produce the various density board and the lightweight partition wall sheet metal forming goods of other purposes.
The inventive method can farthest utilize the discarded object that produces in the paper production process to make sheet forming as base stock, it is turned waste into wealth, recycling has been saved a large amount of land resource and fund again simultaneously, meets national circular economy policy and sustainable development requirement.
Claims (10)
1. utilize papermaking waste to make the method for sheet forming, it is characterized in that may further comprise the steps:
A. choose 5～10 parts air-dry of cut-out dedusting material slags, 5～10 parts of screenings by weight, moisture content is 50～70 parts of 50%～70% paper mill sludges, 10～15 parts in boiler flue gas desulfurization gypsum, and oven dry obtains the powder-mixed raw material after ball mill is pulverized;
B. choose 65～80 parts of powder-mixed raw materials by weight, mass percent concentration is 20～35 parts of 35%～40% magnesium lignosulfonate or calcium lignosulfonate solutions, air-dry back length is 10～15 millimeters 0～10 part of straw particle, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, and in the thickness direction with strip skeleton or latticed skeleton implantation sheet material base stock, wipe off, exert pressure from the thickness direction of mould with forcing press, with the demoulding after the sheet material base stock compression moulding in the mould, after typing, the dry processing, promptly obtain the sheet forming goods.
2. the method for utilizing papermaking waste to make sheet forming according to claim 1 is characterized in that may further comprise the steps:
A. choose 5 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 70 parts of 65% paper mill sludges, 15 parts in boiler flue gas desulfurization gypsum, and oven dry obtains the powder-mixed raw material after ball mill is pulverized, and powder fineness wherein is 50～100 orders;
B. choose 75 parts of powder-mixed raw materials by weight, mass percent concentration is 25 parts of 40% magnesium lignosulfonate or calcium lignosulfonate solutions, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, 6～8 on strip skeleton is implanted on the long limit that is parallel to mould uniformly at intervals, or implants the latticed skeleton of one deck, again with the full mould of sheet material base stock filling, wipe off, exert pressure from the thickness direction of mould with forcing press, it is 0.8～1kg/cm that the sheet material base stock in the mould is pressed into density
3The demoulding behind the aftershaping promptly obtains papermaking sheet paper clamping plate moulded products after typing, the dry processing.
3. the method for utilizing papermaking waste to make sheet forming according to claim 1 is characterized in that may further comprise the steps:
A. choose 10 parts air-dry of cut-out dedusting material slags, 10 parts of screenings by weight, moisture content is 65 parts of 65% paper mill sludges, 10 parts in boiler flue gas desulfurization gypsum, air-dry back length is 10～15 millimeters 5 parts of straw particles, oven dry obtains the powder-mixed raw material after ball mill is pulverized, and powder fineness wherein is 50～100 orders;
B. choose 70 parts of powder-mixed raw materials by weight, mass percent concentration is 30 parts of 40% magnesium lignosulfonate or calcium lignosulfonate solutions, mixes, and obtains the sheet material base stock;
C. the sheet material base stock is packed in the mould, when the sheet material base stock be loaded into mould thickness 1/2 the time, on the mould width, 6～12 on strip skeleton is implanted on the long limit that is parallel to mould uniformly at intervals, or implants the latticed skeleton of one deck, again with the full mould of sheet material base stock filling, wipe off, exert pressure from the thickness direction of mould with forcing press, it is 0.45～0.8kg/cm that the sheet material base stock in the mould is pressed into density
3The back demoulding promptly obtains lightweight partition wall sheet metal forming goods after typing, the dry processing.
4. according to each described method of utilizing papermaking waste to make sheet forming in the claim 1～3, it is characterized in that further may further comprise the steps:
D. to the surface of sheet forming goods spraying one deck varnish, promptly obtain waterproof sheet forming goods.
5. the method for utilizing papermaking waste to make sheet forming according to claim 3, it is characterized in that: in the described steps A, the straw particle is the cereal plants stalk particle that grows grass.
6. according to each described method of utilizing papermaking waste to make sheet forming in the claim 1～3, it is characterized in that: among the described step C, the strip skeleton is bamboo chip or plastic sheet, and latticed skeleton is steel wire or bamboo chip net or plastic wire.
7. the method for utilizing papermaking waste to make sheet forming according to claim 6, it is characterized in that: the thickness in described strip skeleton cross section is 2～6 millimeters, width is 4～10 millimeters, and the length of strip skeleton is lacked 15～30 millimeters than the interior empty length of mould.
8. the method for utilizing papermaking waste to make sheet forming according to claim 1 is characterized in that: among the described step C, divide three pressurizations with forcing press, for the first time pressure is added to 5～15kg/cm
2The back kept pressurized state 20 seconds, for the second time pressure was added to 15～30kg/cm then
2The back kept pressurized state 30 seconds, at last pressure was added to 20～40kg/cm
2The back kept pressurized state 30 seconds, and it is 0.45～1kg/cm that the sheet material base stock in the mould is pressed into density
3After, i.e. compression moulding.
9. according to each described method of utilizing papermaking waste to make sheet forming in the claim 1～3, it is characterized in that: among the described step C, it is that the stereotype plate material for the treatment of after the demoulding is stacked neatly that typing is handled, and applies 4～6kg/cm to the plane of the lamination for the treatment of the stereotype plate material then
2Pressure, and stopped 10～30 minutes down 140～150 ℃ of temperature, promptly finishing typing and handling.
10. according to each described method of utilizing papermaking waste to make sheet forming in the claim 1～3, it is characterized in that: among the described step C, the dry processing is that the profiled sheeting after the typing is sent into tunnel drier oven dry or natural air drying.
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| CN102888787B (en) * | 2011-07-21 | 2014-12-17 | 深圳市裕同包装科技股份有限公司 | Technology for preparing composite packaging material from waste paper and bamboos |
| CN102886799B (en) * | 2011-07-21 | 2014-07-02 | 深圳市裕同包装科技股份有限公司 | Process for preparing bamboo rib reinforced composite packaging material by utilizing waste paper and bamboo |
| CN102776806A (en) * | 2012-07-26 | 2012-11-14 | 刘保军 | Method for preparing formed panel by papermaking waste |
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| CN104418579A (en) * | 2013-08-30 | 2015-03-18 | 宁波天劲新材料有限公司 | High-strength inorganic composite plate manufactured from paper-making sludge and manufacturing method of high-strength inorganic composite plate |
| CN103951367B (en) * | 2014-04-18 | 2015-10-21 | 山东建筑大学 | A kind of take paper white sludge as plasterboard of main raw material and preparation method thereof |
| CN104149246A (en) * | 2014-06-30 | 2014-11-19 | 江苏旭华圣洛迪建材有限公司 | Preparation method of metal net reinforced-type wood-plastic plate |
| CN104496361B (en) * | 2014-11-25 | 2016-08-24 | 四川三阳钢结构有限公司 | A kind of bamboo ribs-stalk composite wall body material composition and preparation method thereof |
| CN106476110B (en) * | 2016-11-24 | 2018-09-21 | 乐山市金口河区森宝野生植物开发有限公司 | A kind of Rhizoma Gastrodiae wine fermentation anti-flaming bamboo base high density composite plank preparation method |
| CN110893638A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Environment-friendly density board and manufacturing method thereof |
| CN109624015A (en) * | 2018-12-29 | 2019-04-16 | 上海昶法新材料有限公司 | A kind of environment-friendly type density board and preparation method thereof of papermaking waste production |
| CN109868690A (en) * | 2019-03-19 | 2019-06-11 | 石家庄华杰木业有限公司 | The production method of backing plate and backing plate |
| CN110710702A (en) * | 2019-11-15 | 2020-01-21 | 江苏华正环保科技有限公司 | Be used for mixed stick system of pressing of tobacco sheet factory dust and slurrying material sediment |
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| CN1340410A (en) * | 2000-09-01 | 2002-03-20 | 洪尚斌 | Artificial board made of wastes (as basic material) from paper mill |
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| FR2758105A1 (en) * | 1997-01-08 | 1998-07-10 | Imc Inst Des Materiaux Composi | PROCESS FOR THE MANUFACTURE OF A MATERIAL FOR OBTAINING DEGRADABLE OBJECTS FROM SLUDGE OF STATIONERY AND PRODUCTS THEREFROM |
| CN1340410A (en) * | 2000-09-01 | 2002-03-20 | 洪尚斌 | Artificial board made of wastes (as basic material) from paper mill |
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