Alumina brick sang tak chu refractory material chi khat a ni. Refractory materials te high-temperature service property te chu temperature sang taka teh theihna property a ni a, chungte chu: refractoriness, reburning line thlak danglamna, thermal shock resistance, slag resistance, load softening temperature leh creep, etc., heng property te hian refractory materials hman dan tur state of use of use the these greaces of greaces of greaces of greace of use of greace of use the state of greaces of greaces of greate of use the hengte hi an hmang tangkai hle a ni. Thil hman dan tur (refractory).
1. Refractoriness .
Refractoriness hi material. raw materials te temperature resistance sang tak mullite, kyanite, andalusite leh sillimanite te ziarang a ni a, chu chu raw materials{. te, impurities, a bik takin flux function chak tak nei te, refractoriness. te tihthianghlimna te hriatthiam nan an hman laiin an refractoriness test a ngai a ni. te chu a ti tlem ang.
Refractoriness Measurement Method: Refractory raw materials emaw materials emaw chu triangular cone-ah siam rawh. Triangular cone-a base chunglam sei zawng chu 2mm a ni a, a hnuai lam base sei zawng chu 8mm a ni a, a san zawng chu 30mm. a ni a, chutah chuan high temperature standard cone-a cone a, a heating rate chu a hnuaia mi ang hian a ni. A chhan chu high-temperature liquid phase a lo lang a, a hnuai lam hawiin a gravity. cone apex chu cone contact turin a bent down na temperature chu refractoriness. a ni a, chu chu refractoriness chu sample. a hun laia standard cone bent zat atanga tarlan a ni.
Refractoriness hi melting point leh operating temperature atanga thliar hran a ngai a ni:
(1) Refractoriness leh melting point awmzia chu a danglam. Melting point chu crystal substance pakhat chu solid state atanga liquid state-a melt theihna tur equilibrium temperature a ni. Refractoriness chu minerals chi hrang hrang melting range a ni. Crystalline minerals-te chu a sang ber a, a sang ber chu a sang ber a, chu chu euect-te chu a inmil a, chu chu euection-a siam a ni.
(2) Refractoriness hi temperature sang tak hnuaia refractory materials hman theihna temperature{. chu mechanical strength hloh thlenga a nem vek tawh avangin hriatthiam loh tur a ni lo. entirnan, basic refractory material chu bonding part avang hian temperature hniam zawkah a melt hmasa ber a, a chhiatna chu a pumpuiah a innghat a, chu chu bonding agent aiin a hniam zawk a, chu chu refractoriness of the bonding a ni a, chu chu refractoriness of the bonding a ni a, chu chu refractoriness a ni. of clay bricks chu refractoriness. aiin 200~250℃velin a hniam zawk a ni.
2. Line siam thar leh tur .
Reheating line change tih hian sample chu temperature ruat saah a tihlum hnua residual expansion emaw contraction emaw a kawk a, hun engemaw chen a dah a, room temperature-ah a lum. a ni.
Line thlak danglam thar hi refractory products quality endikna atana pawimawh tak pakhat a ni a, refractory products quality evaluate theihna tur a ni. Re-burning hnua refractory products volume expansion emaw contraction emaw chuan refractory products te chu temperature tling lo, insufficiency of holding time emaw uneven temperature insufficiency avanga fire a nih loh thu a tarlang{{2} Refractory product’s reburnly index a tam zawk chuan, if the reburnly index reburnly index reburnly. Industrial kilns-a hman tur. temperature sang tak avang hian physical leh chemical inthlak danglamna thenkhat chu a awm chhunzawm zel ang a, chu chuan product volume chu a tizau emaw a ti tlem emaw a tizau ang a, a size pawh a lian zawk. chuan furnace body brick joint-te inthlak danglamna a thlen ang a, chu chuan furnace body lining-ah chuan, leh firings-te chu firings-a firings-te chu a tichhe vek a ngai a, chu chu furnace body lining-ah a ni. Refire Line of the product inthlak danglamna chu a value tarlan chhungah a inthlak danglam..
Line inthlak danglamna reburning chu hetiang hian chhut a ni:
3. thermal shock a do theih loh.
Refractories te hi industrial kilns-a thil bulpui ber a ni. A hman lai temperature-in a nghawng ngei ang, a chang chuan temperature inthlak danglamna rang tak avanga nghawng a ni. Thermal shock resistance tih hian refractory-te’n temperature inthlak danglamna rang tak avanga thermal stress an do theihna a kawk a, a chhiat loh loh chuan.
Kan ram test dan tur sample te chu: 1100℃, tui lum; Hun hmanga sawi chhuah..
Refractory-te thermal shock resistance nghawng thei chhan tam tak a awm a, chuvangin a hnuaia inzawmna hi thumal tam tak a awm a, a hnuaia inzawmna hi tawi tea sawifiah theih a ni:
A chunga inzawmna famkim lo (a chunga formula-te hian thil awm dan leh a lian leh te, heating (cooling) dinhmun, temperature inthlak danglamna rapthlak tak avanga local stress awm dan te, etc{{0} te pawh a ngaihtuah lo) atang hian, a thil siamte thermal shock resistance hian a hnuaia thil pawimawh ber berte hi a nei tih a hriat theih a ni:
(1) elastic modulus hniam tak;
(2) linear expansion coefficient chu a tlem a;
(3) Refractory material-a mineral ber chuan thermal conductivity sang tak a nei a;
(4) Conjugate-te composition leh main structure chu a remchang..
Refractory materials siam chhuahnaah chuan refractory products te thermal shock resistance siam that dan bulpui ber chu hetiang hi a ni:
(1) Low-expansion minerals hmuh theihna turin product phase composition thlak la, a nih loh leh low-expansion minerals superimposition, etc.;
(2) Combination-a composition leh main structure-a siam dan tur dik taka thlan leh control dan tur dik tak, micro-cracks siam leh product thenkhata material particles tihpun dan. Table 1-ah hian expansion coefficient leh property dangte chu refractory material engemaw zat a tarlan a ni..
4. CO corrosion do theihna a ni.
Industrial kiln-a industrial kiln chi hrang hrang. refractory materials te chu erosion hrang hrang a awm ang a, chu chu molten steel, molten iron, molten slag (acidic emaw alkaline slag), temperature inthlak danglamna, thermal stress, leh atmospheric changes (a bik takin tihtlem) te, refractory materials te, refratecatory te tana ziarang a awm ang te, a characteristics te chu a ni ang. Industrial kiln-te hnathawhna hmun, chung zingah chuan co corrosion resistance chu chutiang zinga mi a ni.
CO corrosion resistance tih hian CO boruak chhunga cracking emaw disintegration emaw do theihna tur refractory materials te chu 500℃vel (300~600℃) a CO boruak chak tak a tawn chuan, chemical reaction a awm ang a, 2CO=CO a awm ang a, chu chu a hranpain a awm ang a, a hranpaa carbon chu a chhuak ang a, chu chu a chhuak ang. Smelting process of the blast furnace, refractory products a crack a, a structure chu 400-600℃-a furnace body-a a chunga kan sawi tak chhan avang hian a lo chhuak a, hei hi blast furnace lining. chhiatna chhan pawimawh tak pakhat a ni a, iron oxide products-a iron oxide awm zat leh porosity a tihtlem theihna chhan pawimawh tak a ni.
5. load softening temperature .
Refractory materials load deformation index of refractory materials at high temperature is expressed by the softening temperature under load. Chu chu a product chu temperature leh load sang leh load-a combined effect a do theih lohna a ni a, chu chuan refractory product a lantir a, plastic deformation chiang tak a lantir a, chu index chu refractory material temperature sang ber tehna atana hman a ni fo bawk a ni.
Refractory products load softening temperature index ang chuan, eng condition hnuaiah nge refractory hian a hman laiin a pressure-bearing capacity a hloh a, refractory chhunga microstructure pawh a hloh thei bawk.
6. Temperature sang tak creep .
High Temperature Creep property tih hian deformation leh refractory materials te hun inzawmna a kawk a, constant high temperature leh a certain load. chuan high-temperature creep index ah hian temperature sang takah refractory chakna, temperature leh hun a huam a, hei hian temperature engemaw chen leh hun bituk chhunga refractory product deformation rate a tarlang a ni.
A chunga refractory brick products hman tlanglawn tak takte hi high-temperature industrial kiln hrang hrangah. ngaihtuah a ngai a, chu chu hmanna boruak leh hnathawh dan hrang hrang avang a ni a, a hmun hrang hranga refractory brick-a ngaihtuah tur indicator factor lian ber berte chu thil awmdanah a innghat a ni., alumina brick sang tak tak, hot blast stability-a hman tur, a tam zawk chu thermal shock-a dah a ni a, chu chu thil pawimawh ber a ni.
