ISSN 2594-357X
8° Simpósio Brasileiro de Aglomeração de Minérios — vol. 8, num.8 (2022)
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Resumo
O PRESENTE TRABALHO TEVE COMO OBJETIVO CARACTERIZAR AS PROPRIEDADES DE AMOLECIMENTO E FUSÃO DE DIFERENTES CARGAS FERROSAS COM ESPECIAL ENFOQUE NO COMPORTAMENTO DE REDUÇÃO DE CADA MATERIAL. PARA ISSO, EXPERIMENTOS DE AMOLECIMENTO E FUSÃO FORAM REALIZADOS PARA AMOSTRAS DE MINÉRIO DE FERRO, PELOTAS E SÍNTERES. AS PROPRIEDADES À ALTA TEMPERATURA DOS MATERIAIS FORAM COMPARADAS ENTRE SI E SEUS COMPORTAMENTOS DE REDUÇÃO FORAM ACESSADOS ATRAVÉS DA ANÁLISE DOS GASES DE SAÍDA, PERMITINDO A DELIMITAÇÃO DE TRÊS PRINCIPAIS REGIÕES DE REDUÇÃO. DE MODO GERAL, A TAXA E O GRAU DE REDUÇÃO FORAM MAIORES PARA CARGAS DE MAIOR BASICIDADE. NA REGIÃO DE RETARDO DE REDUÇÃO, A PELOTA ÁCIDA E OS SÍNTERES MOSTRARAM ACENTUADA DIMINUIÇÃO DA TAXA DE REDUÇÃO EM COMPARAÇÃO COM AS DEMAIS. O INÍCIO DESSA REGIÃO TEVE NÍVEIS DE CONTRAÇÃO SIMILARES (20 A 30%) E AMPLO INTERVALO DE GRAU DE REDUÇÃO (40 A 70%). NA REGIÃO ONDE HOUVE A EXSUDAÇÃO DE ESCÓRIA PRIMÁRIA, OBSERVOU-SE PICOS DE REDUÇÃO E DE CONSUMO DE CARBONO, SENDO AMBOS MAIORES PARA CARGAS MENOS REDUZIDAS.
THE PRESENT STUDY HAD THE OBJECTIVE TO CHARACTERIZE THE SOFTENING AND MELTING PROPERTIES OF DIFFERENT IRON-BURDEN MATERIALS WITH AN ESPECIAL FOCUS EACH BURDEN REDUCTION BEHAVIOR. FOR THAT, SOFTENING AND MELTING EXPERIMENTS WERE CARRIED OUT FOR SAMPLES OF IRON ORE, PELLETS, AND SINTERS. THE HIGH-TEMPERATURE PROPERTIES OF THE MATERIALS WERE COMPARED AMONG EACH OTHER AND THEIR REDUCTION BEHAVIORS WERE EVALUATED FROM THE CONTINUOUS OUTGAS ANALYSIS, WHICH ALLOWED THE DELIMITATION OF THREE MAIN REDUCTION REGIONS. OVERALL, THE DEGREE OF REDUCTION (DR) AND REDUCTION RATES (RR) WERE BIGGER FOR HIGHER BASICITY MATERIALS. AT THE REGION OF REDUCTION RETARDATION, THE ACID PELLET AND THE SINTERS SHOWED SHARP DECLINES IN RR IN COMPARISON TO OTHERS. THE BEGINNING OF THE RETARDATION REGIONS SHOWED SIMILAR CONTRACTION LEVELS (20 TO 30%) AND A WIDE RD INTERVAL (40 TO 70%) FOR THE MATERIALS TESTED. IN THE REGION WHERE THE PRIMARY SLAG EXUDED, ABRUPT PEAKS OF REDUCTION AND CARBON CONSUMPTION WERE OBSERVED, BOTH MORE PRONOUNCED FOR MATERIALS WITH LOWER RD.
Palavras-chave
Amolecimento e Fusão; Redução, Cargas Ferrosas, Alto-forno.
softening and melting, Reduction, Iron-burden Materials and Blast Furnace.
Como citar
Flores, Ismael Vemdrame;
Assis, Otávio Henrique Matos de;
Bagatini, Maurício Covcevich.
COMPORTAMENTO DE REDUÇÃO DURANTE O AMOLECIMENTO E FUSÃO DE DIFERENTES CARGAS FERROSAS PARA ALTO-FORNO
,
p. 25-36.
In: 8° Simpósio Brasileiro de Aglomeração de Minérios,
São Paulo,
2022.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-34358
(1/1) ErrorException |
|---|
| in StreamHandler.php line 131 |
| at HandleExceptions->handleError(8, 'fwrite(): write of 1826 bytes failed with errno=28 No space left on device', '/var/www/webroot/ROOT/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php', 131, array('stream' => resource, 'record' => array('message' => 'file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', 'context' => array('exception' => object(ErrorException)), 'level' => 400, 'level_name' => 'ERROR', 'channel' => 'production', 'datetime' => object(DateTime), 'extra' => array(), 'formatted' => '[2025-05-29 12:33:07] production.ERROR: file_put_contents(): write of 360 bytes failed with errno=28 No space left on device {"exception":"[object] (ErrorException(code: 0): file_put_contents(): write of 360 bytes failed with errno=28 No space left on device at /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:122)[stacktrace]#0 [internal function]: Illuminate\\\\Foundation\\\\Bootstrap\\\\HandleExceptions->handleError(8, \'file_put_conten...\', \'/var/www/webroo...\', 122, Array)#1 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(122): file_put_contents(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', 2)#2 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/FileSessionHandler.php(83): Illuminate\\\\Filesystem\\\\Filesystem->put(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', true)#3 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Store.php(128): Illuminate\\\\Session\\\\FileSessionHandler->write(\'Zs3pxzvH8N6fF6Q...\', \'a:5:{s:6:\\"_toke...\')#4 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(87): Illuminate\\\\Session\\\\Store->save()#5 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(218): Illuminate\\\\Session\\\\Middleware\\\\StartSession->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#6 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(189): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminateMiddleware(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#7 /var/www/webroot/ROOT/public/index.php(59): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#8 {main}"} '))) |
| at fwrite(resource, '[2025-05-29 12:33:07] production.ERROR: file_put_contents(): write of 360 bytes failed with errno=28 No space left on device {"exception":"[object] (ErrorException(code: 0): file_put_contents(): write of 360 bytes failed with errno=28 No space left on device at /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:122)[stacktrace]#0 [internal function]: Illuminate\\\\Foundation\\\\Bootstrap\\\\HandleExceptions->handleError(8, \'file_put_conten...\', \'/var/www/webroo...\', 122, Array)#1 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(122): file_put_contents(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', 2)#2 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/FileSessionHandler.php(83): Illuminate\\\\Filesystem\\\\Filesystem->put(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', true)#3 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Store.php(128): Illuminate\\\\Session\\\\FileSessionHandler->write(\'Zs3pxzvH8N6fF6Q...\', \'a:5:{s:6:\\"_toke...\')#4 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(87): Illuminate\\\\Session\\\\Store->save()#5 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(218): Illuminate\\\\Session\\\\Middleware\\\\StartSession->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#6 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(189): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminateMiddleware(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#7 /var/www/webroot/ROOT/public/index.php(59): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#8 {main}"} ')in StreamHandler.php line 131 |
| at StreamHandler->streamWrite(resource, array('message' => 'file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', 'context' => array('exception' => object(ErrorException)), 'level' => 400, 'level_name' => 'ERROR', 'channel' => 'production', 'datetime' => object(DateTime), 'extra' => array(), 'formatted' => '[2025-05-29 12:33:07] production.ERROR: file_put_contents(): write of 360 bytes failed with errno=28 No space left on device {"exception":"[object] (ErrorException(code: 0): file_put_contents(): write of 360 bytes failed with errno=28 No space left on device at /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:122)[stacktrace]#0 [internal function]: Illuminate\\\\Foundation\\\\Bootstrap\\\\HandleExceptions->handleError(8, \'file_put_conten...\', \'/var/www/webroo...\', 122, Array)#1 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(122): file_put_contents(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', 2)#2 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/FileSessionHandler.php(83): Illuminate\\\\Filesystem\\\\Filesystem->put(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', true)#3 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Store.php(128): Illuminate\\\\Session\\\\FileSessionHandler->write(\'Zs3pxzvH8N6fF6Q...\', \'a:5:{s:6:\\"_toke...\')#4 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(87): Illuminate\\\\Session\\\\Store->save()#5 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(218): Illuminate\\\\Session\\\\Middleware\\\\StartSession->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#6 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(189): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminateMiddleware(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#7 /var/www/webroot/ROOT/public/index.php(59): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#8 {main}"} '))in StreamHandler.php line 117 |
| at StreamHandler->write(array('message' => 'file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', 'context' => array('exception' => object(ErrorException)), 'level' => 400, 'level_name' => 'ERROR', 'channel' => 'production', 'datetime' => object(DateTime), 'extra' => array(), 'formatted' => '[2025-05-29 12:33:07] production.ERROR: file_put_contents(): write of 360 bytes failed with errno=28 No space left on device {"exception":"[object] (ErrorException(code: 0): file_put_contents(): write of 360 bytes failed with errno=28 No space left on device at /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:122)[stacktrace]#0 [internal function]: Illuminate\\\\Foundation\\\\Bootstrap\\\\HandleExceptions->handleError(8, \'file_put_conten...\', \'/var/www/webroo...\', 122, Array)#1 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(122): file_put_contents(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', 2)#2 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/FileSessionHandler.php(83): Illuminate\\\\Filesystem\\\\Filesystem->put(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', true)#3 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Store.php(128): Illuminate\\\\Session\\\\FileSessionHandler->write(\'Zs3pxzvH8N6fF6Q...\', \'a:5:{s:6:\\"_toke...\')#4 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(87): Illuminate\\\\Session\\\\Store->save()#5 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(218): Illuminate\\\\Session\\\\Middleware\\\\StartSession->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#6 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(189): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminateMiddleware(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#7 /var/www/webroot/ROOT/public/index.php(59): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#8 {main}"} '))in AbstractProcessingHandler.php line 39 |
| at AbstractProcessingHandler->handle(array('message' => 'file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', 'context' => array('exception' => object(ErrorException)), 'level' => 400, 'level_name' => 'ERROR', 'channel' => 'production', 'datetime' => object(DateTime), 'extra' => array(), 'formatted' => '[2025-05-29 12:33:07] production.ERROR: file_put_contents(): write of 360 bytes failed with errno=28 No space left on device {"exception":"[object] (ErrorException(code: 0): file_put_contents(): write of 360 bytes failed with errno=28 No space left on device at /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:122)[stacktrace]#0 [internal function]: Illuminate\\\\Foundation\\\\Bootstrap\\\\HandleExceptions->handleError(8, \'file_put_conten...\', \'/var/www/webroo...\', 122, Array)#1 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php(122): file_put_contents(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', 2)#2 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/FileSessionHandler.php(83): Illuminate\\\\Filesystem\\\\Filesystem->put(\'/var/www/webroo...\', \'a:5:{s:6:\\"_toke...\', true)#3 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Store.php(128): Illuminate\\\\Session\\\\FileSessionHandler->write(\'Zs3pxzvH8N6fF6Q...\', \'a:5:{s:6:\\"_toke...\')#4 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(87): Illuminate\\\\Session\\\\Store->save()#5 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(218): Illuminate\\\\Session\\\\Middleware\\\\StartSession->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#6 /var/www/webroot/ROOT/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(189): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminateMiddleware(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#7 /var/www/webroot/ROOT/public/index.php(59): Illuminate\\\\Foundation\\\\Http\\\\Kernel->terminate(Object(Illuminate\\\\Http\\\\Request), Object(Illuminate\\\\Http\\\\Response))#8 {main}"} '))in Logger.php line 344 |
| at Logger->addRecord(400, 'file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', array('exception' => object(ErrorException)))in Logger.php line 707 |
| at Logger->error('file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', array('exception' => object(ErrorException)))in Writer.php line 203 |
| at Writer->writeLog('error', 'file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', array('exception' => object(ErrorException)))in Writer.php line 114 |
| at Writer->error('file_put_contents(): write of 360 bytes failed with errno=28 No space left on device', array('exception' => object(ErrorException)))in Handler.php line 113 |
| at Handler->report(object(ErrorException))in Handler.php line 100 |
| at Handler->report(object(ErrorException))in HandleExceptions.php line 81 |
| at HandleExceptions->handleException(object(ErrorException)) |
