CN1654412A - Section materials produced from phosphogypsum and its preparation method - Google Patents

Section materials produced from phosphogypsum and its preparation method Download PDF

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Publication number
CN1654412A
CN1654412A CN 200410081601 CN200410081601A CN1654412A CN 1654412 A CN1654412 A CN 1654412A CN 200410081601 CN200410081601 CN 200410081601 CN 200410081601 A CN200410081601 A CN 200410081601A CN 1654412 A CN1654412 A CN 1654412A
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China
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phosphogypsum
powder
section bar
sand
ground dolomite
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CN 200410081601
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CN100439277C (en
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马兴祥
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GUIYANG SHUNHAI TI-GOLD COATING PLANT
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GUIYANG SHUNHAI TI-GOLD COATING PLANT
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Abstract

The present invention is section bar produced with ardealite and PVC and its production process, and relates to structural member. The section bar is produced with mixed ardealite and dolomite powder 71-76 wt%, PVC 18-23 wt%, assistant 1-5 wt% and metallic sand 1 wt%. The production process includes water washing ardealite, drying, calcining and grinding into fine powder; crushing dolomite, calcining and grinding into powder; mixing to obtain mixed ardealite and dolomite powder; mixing PVC resin, mixed powder, assistant and metallic sand in the proportion, heating and extruding the mixture to form pellet; heating the pellet to form paste and extruding in mold to form section bar. The section bar has high weather resistance, high corrosion resistance, long service life, high waterproof and fireproof performance, high strength, electrostatic resistance and excellent insulating performance, and may be widely used.

Description

Section bar and method for making thereof with phosphogypsum production
Technical field
The present invention relates to structural member, in particular to the section bar and the manufacture method thereof that with the phosphogypsum are raw material production.
Background technology
Section bar is the material of construction that section has certain geometrical shape, is usually used in multiple structures and buildings.The section bar that present many departments use, for example the railing of telecommunication cable support, power cable and transformer bracket, highway and Bridge guardrail, public place, the joist in the mine or the like almost are to make with metallic substance entirely, especially make with steel.Though steel have the high advantage of intensity, common iron is easy-to-rust in air and wet environment, and work-ing life is limited, and often changes labor intensive and financial resources.If use stainless steel or other metallic substance instead, can increase investment and use cost again, uneconomical.Nonmetal as section bar, can only be used for the occasion not high to requirement of strength.
Phosphogypsum is the trade waste of Wet-process Phosphoric Acid Production process discharging in the phosphorous chemical industry.People just constantly explore the novel method of phosphogypsum comprehensive utilization, also obtain some progress, for example Chinese patent application No. 95190467.1 " production method with polymer materials of high chemical resistance and anti-mechanical force ", Chinese patent application part No. 02110236.8 " phosphogypsum wall covering and preparation method thereof " etc., immediate patent application is No. 200410021766.4 " with the method for phosphogypsum production building and ornament materials and materials for wall ".But producing section bar with phosphogypsum does not appear in the newspapers as yet.
Summary of the invention
The object of the present invention is to provide a kind of main be the section bar of raw material production with phosphogypsum.
Another purpose of the present invention is to provide the method for making of this section bar.
For reaching goal of the invention, what the contriver provided is that the section bar of raw material production is made by following prescription (massfraction) with phosphogypsum:
The powder mix 71%～76% of phosphogypsum powder and ground dolomite
Polyvinyl chloride 18%～23%
Auxiliary agent 1%～5%
Metal sand 1%
In the powder mix of phosphogypsum powder and ground dolomite, the massfraction of phosphogypsum powder accounts for 70%, and the massfraction of ground dolomite accounts for 30%; Used ground dolomite is the powder through half incinerating rhombspar.
The method for making of this section bar is as follows:
The first step, the preparation powder mix:
Elder generation cleans up phosphogypsum and dries with clear water, deliver to tunnel furnace 1300～1360 ℃ of following high-temperature calcinations 20～30 minutes, deviates from part moisture, P in the phosphogypsum 2O 5And fluorine, make its water-content be lower than 10%, P 2O 5≤ 0.3%, F≤0.1%; It is standby to be milled down to 400～450 orders through the furnace charge after the calcining again.
In order to guarantee that phosphogypsum is clean relatively, tunnel furnace adopts gas fuel combustion, for example with common town gas, Sweet natural gas, water-gas or semi-water gas, purify yellow phosphorus electric furnace tail gas, calcium carbide stove exhaust etc. after filtration and make fuel, but can not make fuel with coal dust.
Again ground dolomite is broken to 20～30mm, calcining is 2 hours under 700 ± 20 ℃ of conditions, and the cooling back is levigate to 400～450 orders, packs standby.Facts have proved, add this half incinerating rhombspar, can reduce section bar density, can improve section bar intensity greatly again.
Afterwards, mix at 70%: 30%, be made into the powder mix of phosphogypsum powder and ground dolomite, be called for short powder mix according to the mass ratio of phosphogypsum powder and ground dolomite.
In second step, prepare burden:
Add polyvinyl chloride (PVC) RESINS, add auxiliary materials such as softening agent, stablizer, tensio-active agent when being heated to 90～100 ℃, behind mixing under 1 minute the stirring, add the powder mix that previous step is made, add metal sand simultaneously, continue stirring and evenly mixing.Wherein the mass ratio of polyvinyl chloride and powder mix is 25: 75.
Softening agent commonly used is dibutyl terephthalate or dioctyl terephthalate, and stablizer commonly used is lead stearate, barium stearate, three alkaline lead sulfates, diphenyl thiourea etc., and tensio-active agent commonly used is stearic acid and paraffin.
The adding of metal sand can reinforcing profile intensity.Metal sand commonly used has: aloxite, manganese sand, silica sand, titanium sand etc.
In the 3rd step, carry out the high strength batch mixing:
Under high strength stirs, the said mixture material is heated to 90～100 ℃, continuously stirring 10-12 minute, the pulverulent material that is uniformly mixed.
In the 4th step, carry out granulation:
Above-mentioned pulverulent material is heated to 160 ℃, is squeezed into granule materials about diameter 5mm with the extruding type tablets press.
In the 5th step, carry out extrusion moulding:
Above-mentioned granule materials is sent into extruding machine, be heated to 180～200 ℃, make it be paste, clamp-on the previously prepd mould by extrusion molding, make the section bar of various different geometries sections as required, as T shape section bar, ∏ shape section bar, square material, H-shaped material etc.
According to user's requirement and practical needs, further process, as boring etc.
The section bar that the inventive method is produced, have that good weatherability, erosion resistance are strong, long service life, waterproof, protection against the tide, fire-retardant, intensity is high, antistatic, advantages such as insulating property are good, cost is low, easy installation.Compare with concrete, also have the advantage of light specific gravity.Use the inventive method, both can reduce the pollution of phosphogypsum effectively, help improving environment, turn harm into good, reduced the cost of structures and buildings again, have good society and environmental effect, good economic benefit is arranged again environment.Section bar of the present invention can be widely used in multiple department, as being in member of seawater etch etc. in railing, house sewer line and the banister of telecommunication cable support, power cable and transformer bracket, high voltage power transmission pylon, highway and Bridge guardrail, public place, the joist, seashore recreational facilities in the mine.
Embodiment
Embodiment: the phosphogypsum of getting the discharging of Guizhou Province enterprise is a raw material, and its chemical ingredients (massfraction) is as shown in the table after testing:
Composition SO 3CaO SiO 2F MgO Al 2O 3Fe 2O 3
Content % 39.46 31.40 4.99 0.2 0.04 0.04 0.21
Composition P 2O 5Na 2O K 2O TiO 2The MnO loss on ignition adds up to
Content % 1.18 0.09 0.09 0.07 0.01 21.76 100
The first step, the preparation powder mix: the residue phosphogypsum that produces in the Wet-process Phosphoric Acid Production process cleaned up with clear water and dry, deliver to tunnel furnace with domestic gas 1300～1360 ℃ of following high-temperature calcinations 25 minutes, deviate from part moisture, P in the phosphogypsum 2O 5And fluorine, it is standby to be milled down to 400～450 orders through the furnace charge after the calcining again.This moment, variation took place in the composition of phosphogypsum, and its chemical ingredients (massfraction) is as shown in the table after testing:
Composition SO 3CaO SiO 2F MgO Al 2O 3Fe 2O 3
Content % 44.46 32.40 2.99 0.04 0.02 0.02 0.18
Composition P 2O 5Na 2O K 2O TiO 2The MnO loss on ignition adds up to
Content % 0.18 0.04 0.04 0.04 0.01 19.67 100
Detected result shows: P 2O 5≤ 0.3%, F≤0.1% meets the requirement of producing building materials, can be used for producing section bar.
Get the rhombspar of Guiyang Wudang District dolomite mineral point again, its composition (massfraction) is as follows:
Composition CaO MgO SiO 2Al 2O 3Fe 2O 3
Content % 31.36 21.58 0.15 0.06 0.09
Ground dolomite is broken to 20～30mm, and calcining is 2 hours under 700 ± 20 ℃ of conditions, realizes half calcining, and the cooling back is levigate to 400～450 orders, standby.Rhombspar after half calcining is composed as follows:
Composition CaO MgO MgCO 3CaCO 3Other
Content % 3.65 23.50 8.76 61.84 2.25
The rate of decomposition of half calcining back magnesiumcarbonate is 85.24%, and the rate of decomposition of lime carbonate is 9.11%.
Afterwards, mix at 70%: 30%, be made into powder mix according to the mass ratio of phosphogypsum powder and ground dolomite.
Second step prepared burden, add the 15kg polyvinyl chloride (PVC) RESINS, add auxiliary materials such as dibutyl terephthalate softening agent 250g, lead stearate 400g, barium stearate 350g, stearic acid 250g and paraffin 250g when being heated to 90～100 ℃, add aluminum metal sand 1kg simultaneously, after stirring the 1min mixing, add the powder mix 35kg that previous step is made, continue stirring and evenly mixing, obtain the about 52.5kg of material.
The 3rd step was carried out the high strength batch mixing, the said mixture material was heated to 98 ℃, continuously stirring 12min, the pulverulent material that is uniformly mixed under high strength stirs.
The 4th step was carried out granulation, and above-mentioned pulverulent material is heated to 160 ℃, was squeezed into granule materials about diameter 5mm with the extruding type tablets press.
The 5th step was carried out extrusion moulding, and above-mentioned granule materials is sent into extruding machine, was heated to 195 ℃, made it be paste, clamp-oned previously prepd section bar mould by extrusion molding, made section bar.
According to user's requirement, hole.
Product detects through national building materials test center, and the result is as follows:
Erosion resistance is with 10%HCl solution soaking 48h, surperficial no change; Use 10%NaOH48h, surperficial no change;
Planeness 1.0mm; Ping Zedu 60.2;
Drop impact: the 200g heavy ball is from 1m place drop impact specimen surface, no change (span is 450mm);
Not so property: spirit lamp vertically fires sample 5min, from fire from putting out;
High temperature resistant: (70 ± 2) ℃ following 2h, specimen surface no change;
Low temperature resistant: (40 ± 2) ℃ following 2h, specimen surface no change;
Anti-artificial time is aging: 200h artificial accelerated aging, aberration are 1.1,0 grade of variable color;
High pressure resistant: the pressurization of 20000v machinery impacts 1.0 does not have the A of change level.
Through the resource environment test analysis center test of geochemical investigation institute of the Chinese Academy of Sciences, the observed value of the radioactive sample γ spectrum of this section bar does not all exceed national standard, belongs to the category-A material.

Claims (5)

  1. The section bar that 1 usefulness phosphogypsum is produced is characterized in that this section bar makes by following prescription:
    The powder mix 71%～76% of phosphogypsum powder and ground dolomite
    Polyvinyl chloride 18%～23%
    Auxiliary agent 1%～5%
    Metal sand 1%.
  2. 2 section bars as claimed in claim 1 is characterized in that in the powder mix of described phosphogypsum powder and ground dolomite, the massfraction of phosphogypsum powder accounts for 70%, and the massfraction of ground dolomite accounts for 30%; Used ground dolomite is the powder through half incinerating rhombspar.
  3. 3 section bars as claimed in claim 1 is characterized in that described auxiliary agent comprises softening agent, stablizer, tensio-active agent, and softening agent commonly used is dibutyl terephthalate or dioctyl terephthalate; Stablizer commonly used is lead stearate, barium stearate, three alkaline lead sulfates, diphenyl thiourea; Tensio-active agent commonly used is stearic acid and paraffin; Metal sand commonly used has aloxite, manganese sand, silica sand, titanium sand.
  4. 4 method for makings of section bar according to claim 1, its feature comprises:
    (1) phosphogypsum is cleaned up with clear water and dry, deliver to tunnel furnace, deviate from part moisture, P in the phosphogypsum 1300～1360 ℃ of following high-temperature calcinations 20～30 minutes 2O 5And fluorine, make its water-content be lower than 10%, P 2O 5≤ 0.3%, F≤0.1%; It is standby to be milled down to 400～450 orders through the furnace charge after the calcining again; Again ground dolomite is broken to 20～30mm, calcining is 2 hours under 700 ± 20 ℃ of conditions, and the cooling back is levigate to 400～450 orders, standby; Afterwards, mix at 70%: 30%, be made into powder mix according to the mass ratio of phosphogypsum powder and ground dolomite.
    (2) add polyvinyl chloride (PVC) RESINS, add auxiliary materials such as softening agent, stablizer, tensio-active agent when being heated to 90～100 ℃, behind mixing under 1 minute the stirring, add the phosphogypsum powder that previous step is made, add metal sand simultaneously, continue stirring and evenly mixing.Wherein the mass ratio of polyvinyl chloride and phosphogypsum powder is 25: 75.
    (3) under high strength stirs, the said mixture material is heated to 90～100 ℃, continuously stirring 10-12 minute, the pulverulent material that is uniformly mixed;
    (4) above-mentioned pulverulent material is heated to 160 ℃, is squeezed into granule materials about diameter 5mm with the extruding type tablets press;
    (5) above-mentioned granule materials is sent into extruding machine, be heated to 180～200 ℃, make it be paste, clamp-on the previously prepd mould, make the section bar of various different geometries sections as required by extrusion molding.
  5. 5 method for makings as section bar as described in the claim 3 is characterized in that phosphogypsum adopts gas fuel combustion in tunnel furnace, for example adopt common town gas or Sweet natural gas or water-gas or semi-water gas or purify yellow phosphorus electric furnace and calcium carbide stove exhaust after filtration.
CNB2004100816016A 2004-12-24 2004-12-24 Section materials produced from phosphogypsum and its preparation method Expired - Fee Related CN100439277C (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100364917C (en) * 2006-10-21 2008-01-30 杨金平 Phosphogypsum high-strength wall brick and its production method
CN104086915A (en) * 2014-06-17 2014-10-08 宁国新博能电子有限公司 Special environmentally-friendly PVC bushing for motors
CN105331017A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 Preparation method for producing polyvinyl chloride foaming sheet filler
CN105331011A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 Filler for PVC production and preparation method thereof
CN105331012A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 PVC profile produced by taking phosphogypsum as filler
CN105331013A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 Method for producing PVC pipes by taking phosphogypsum as filler
CN106006696A (en) * 2016-05-12 2016-10-12 贵州开磷磷石膏综合利用有限公司 Fabrication method and application of gypsum micro powder
CN114752160A (en) * 2022-04-28 2022-07-15 贵州成丰达电气(集团)有限公司 Formula of high polymer/phosphogypsum alloy flame-retardant cable bridge and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071178A (en) * 1991-09-19 1993-04-21 湘潭市塑料六厂 Super-strong moisture absorbing ceramic former and manufacture method thereof
CN1165119A (en) * 1997-01-15 1997-11-19 刘治华 Light wall prefab capable of assembling on site

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100364917C (en) * 2006-10-21 2008-01-30 杨金平 Phosphogypsum high-strength wall brick and its production method
CN104086915A (en) * 2014-06-17 2014-10-08 宁国新博能电子有限公司 Special environmentally-friendly PVC bushing for motors
CN104086915B (en) * 2014-06-17 2016-12-28 青岛燕园海洋生物科技有限公司 A kind of motor special environment friendly PVC sleeve pipe
CN105331017A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 Preparation method for producing polyvinyl chloride foaming sheet filler
CN105331011A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 Filler for PVC production and preparation method thereof
CN105331012A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 PVC profile produced by taking phosphogypsum as filler
CN105331013A (en) * 2015-11-29 2016-02-17 贵州开磷集团股份有限公司 Method for producing PVC pipes by taking phosphogypsum as filler
CN106006696A (en) * 2016-05-12 2016-10-12 贵州开磷磷石膏综合利用有限公司 Fabrication method and application of gypsum micro powder
CN114752160A (en) * 2022-04-28 2022-07-15 贵州成丰达电气(集团)有限公司 Formula of high polymer/phosphogypsum alloy flame-retardant cable bridge and preparation method thereof

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