1. Cov kaus poom hlau xim (xws li galvanized hlau, galvanized steel)
Tag nrho cov kev rov ua dua tshiab yog kwv yees li 41.7%, nrog rau qhov kev faib ua feem nkag mus rau hauv cov khoom siv rov ua dua tshiab tom qab kev tu kom zoo tsis tu ncua.
Cov kaus poom huv huv tuaj yeem xa mus rau hluav taws xob arc rauv rau steelmaking, ua tiav cov hlau rov qab ntawm ntau dua 95%, thiab txo kev siv hluav taws xob ib tuj hlau los ntawm ntau dua 60% piv rau cov hlau ore txoj kev.
Qee qhov chaw ua lag luam (xws li Yangtze River Delta) tau siv "48-teev qhov rooj- mus rau qhov rooj," txhawb kev txhim kho kev siv dua tshiab.
Txawm li cas los xij, yog tias tsis tau ntxuav kom huv si thiab muaj cov khoom seem txaus ntshai, lawv tseem poob rau hauv HW12 lossis HW49 cov khib nyiab pov tseg thiab tsis tuaj yeem nkag mus rau cov khoom siv rov ua dua qub.
2. Cov kaus poom yas pleev xim (xws li HDPE, PP) Cov khoom siv rov ua dua tshiab yog qis dua li cov kaus poom hlau, thiab feem ntau tsis suav nrog cov khoom siv yas pov tseg vim muaj kuab paug hnyav.
Yog tias cov kuab tshuaj-raws li cov xim residues tseem nyob (muaj cov benzene compounds, halogenated hydrocarbons), lawv raug cais raws li HW49 pov tseg, yuav tsum tau muab pov tseg thiab tsis tuaj yeem rov ua dua tshiab.
Ib qho me me, tom qab sorting, crushing, thiab granulation, tuaj yeem siv los tsim cov khoom tsis yog - cov khoom noj xws li pallets thiab cov kav dej, nrog lub zog tensile tuav tus nqi ntawm cov yas rov ua dua mus txog 82%.
Tam sim no, tsis muaj kev paub tab raug kaw- lub voj voog rov ua dua tshiab, thiab qhov kev siv peev txheej tiag tiag tsawg dua 20% (kwv yees raws li 2023 tsab ntawv ceeb toom ntawm Tuam Tshoj Plastics Processing Industry Association).
