The method of waste painting slag recovery and reusing and recycling
Technical field
The present invention relates to chemical field, specifically the method for waste painting slag recovery and reusing and recycling.
Background technology
The pollution of waste painting slag in air, soil, water and working environment, jeopardizes farmland, irrigation and people and animals' drinking water and underground water, pollutes irreversible harmfulness well-known.
Application number is the method for the recycling waste painting slag of industry of 200710146302, but have no idea to realize, because waste painting slag is divided into property of water-bearing waste painting slag and dryness waste painting slag, not only involve the change of physical property, also need the change of chemical property just can reach the standard of recycling.
Summary of the invention
The present invention is in order to effect a radical cure the pollution of waste painting slag in air, soil and working environment thereof, on tank and spray room wall and the waste painting slag such as paint package barrel, depainting will be reclaimed, recycle after regeneration technology process, the special method proposing waste painting slag recovery and reusing and recycling.
Technical scheme of the present invention is for this reason, the method for waste painting slag recovery and reusing and recycling, comprises property of water-bearing waste painting slag and dryness waste painting slag, it is characterized in that:
The method of A, property of water-bearing waste painting slag recovery and reusing and recycling,
The first step, containing by dry in the drying machine of 45-50 DEG C containing sealing wax slag, be evaporated completely moisture;
Second step, pulverizing, pulverize dried waste painting slag, and smashing fineness is 500-1000 object dry powder;
3rd step, dissolving, the dry powder of screening adds reactor, and wherein dry powder is 30-35%, adds water paint resin 65-70%, and tune pH value is 7.5-8.5, and then adds anticorrisive agent, and anticorrisive agent accounts for 1% of total amount; Mix the powder breast after making water paint resin and dissolving to be uniformly mixed, be water paint;
4th step, grinding water paint, grind the water paint sand mill of the 3rd step or three-roller;
5th step, filtration water paint, screen pack fineness 450-650 object filter screen;
6th step, toning, will filter water paint, add mill base while stirring, and mixing time is more than 4 hours;
7th step, only to put, after required colourity having been adjusted, in groove, only put more than 72 hours, after degreasing finished product;
The method of B, dryness waste painting slag recovery and reusing and recycling;
The first step, to dissolve, that the waste painting slag without moisture after drying is put into solvation dissolves in groove or reactor, wherein the ratio of solvation and dryness waste painting slag is 60%-65%:35%-40%, finish rear only put 24 hours after, then stir until all dissolve;
Second step, grinding, grind with sand mill or three-roller;
3rd step, filtration, screen pack fineness 450-650 object filter screen;
4th step, adjusting viscosity, viscosity regulates will be guaranteed consistent with the viscosity of former paint;
5th step, toning, by the regeneration of having filtered paint join in reactor, add while stirring solvent borne mill base finished product.
Beneficial effect:
Property of water-bearing waste painting slag and dryness waste painting slag process by the present invention respectively, the physical property utilizing them different and solvability, all turn waste into wealth, and rationally collects, the pollution situation of thorough radical cure waste painting slag in air, soil and working environment thereof is the strong guarantee of environmental improvement.
Detailed description of the invention
The method of waste painting slag recovery and reusing and recycling, comprises property of water-bearing waste painting slag and dryness waste painting slag, it is characterized in that:
The method of A, property of water-bearing waste painting slag recovery and reusing and recycling,
The first step, containing by dry in the drying machine of 45-50 DEG C containing sealing wax slag, be evaporated completely moisture;
Second step, pulverizing, pulverize dried waste painting slag, and smashing fineness is 500-1000 object dry powder;
3rd step, dissolving, the dry powder of screening adds reactor, and wherein dry powder is 30-35%, adds water paint resin 65-70%, and tune pH value is 7.5-8.5, and then adds anticorrisive agent, and anticorrisive agent accounts for 1% of total amount; Mix the powder breast after making water paint resin and dissolving to be uniformly mixed, be water paint;
4th step, grinding water paint, grind the water paint sand mill of the 3rd step or three-roller;
5th step, filtration water paint, screen pack fineness 450-650 object filter screen;
6th step, toning, will filter water paint, add mill base while stirring, and mixing time is more than 4 hours;
7th step, only to put, after required colourity having been adjusted, in groove, only put more than 72 hours, after degreasing finished product;
Result of the test:
By the water paint produced, spray or brush on the surface of the works such as ligneous piece, steel, non-ferrous metal, on the workpiece of hot curing varnish, paint film is detected by cross-hatching or a stroke circle method after extremely cooling to be dried.
The thickness General Requirements of paint film at 30 microns, fineness with fineness scraper plate measurement formula, by relevant national standard detect, be generally 50-100 micron be qualified.
Colourity, luminosity, viscosity, to be as the criterion in subordinate list, thickness can add resin lower than 30 microns increases mucus or fine powder or spary 2 times to 3 times; Viscosity test, with painting S cup, or viscosimeter; Be coated with S cup viscosimetric and require 80 to 120 seconds, viscosimeter test kinematic viscosity be about 800 be qualified, also can be required and determine according to user market.Viscosity height can add diluent decline viscosity, and diluent is selected, and water paint ionized water is adjusted.
Subordinate list
Sequence number |
Interventions Requested |
Unit |
Testing result |
Remarks |
1 |
Adhesive force (cross-hatching) |
Level |
1 |
|
2 |
Pencil hardness |
— |
2B |
|
3 |
Paint thickness |
∧m |
28 |
Adjustable |
4 |
Glossiness (60
°Gloss)
|
% |
15 |
Adjustable |
5 |
Resistance to neutral salt spray |
h |
160(is without foaming, without getting rusty, without obvious loss of gloss and variable color) |
Meet relevant criterion |
The method of B, dryness waste painting slag recovery and reusing and recycling;
The first step, to dissolve, that the waste painting slag without moisture after drying is put into solvation dissolves in groove or reactor, wherein the ratio of solvation and dryness waste painting slag is 60%-65%:35%-40%, finish rear only put 24 hours after, then stir until all dissolve;
Second step, grinding, grind with sand mill or three-roller;
3rd step, filtration, screen pack fineness 450-650 object filter screen;
4th step, adjusting viscosity, viscosity regulates will be guaranteed consistent with the viscosity of former paint;
5th step, toning, by the regeneration of having filtered paint join in reactor, add while stirring solvent borne mill base finished product.
Experimental result:
Use above-mentioned paint, its coating performance test result is hardness 2B, adhesion 1 grade, glossiness 15, the 160h of resistance to neutral salt spray test.Result shows, the surface of the work of dryness paint slag application material again after regeneration technology process, and the performance of its coating can reach the workpiece coating performance of crude oil paint.Illustrate that reclaiming waste painting slag regeneration technique meets the requirements, not only for Reducing Cost in Enterprises but also can decrease the contamination hazard of solid refuse to social environment, and can treat both principal and secondary aspect of disease, protection of the environment, has broad prospects.